dcea5f1f38
This is especially helpful for AArch64, which simplifies ands + cmp to tst. Alive2: https://alive2.llvm.org/ce/z/LLgcJJ --------- Co-authored-by: Simon Pilgrim <llvm-dev@redking.me.uk>
902 lines
26 KiB
LLVM
902 lines
26 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -O3 -mtriple=arm64-apple-macosx -o - %s | FileCheck %s
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; RUN: llc -O3 -mtriple=arm64-apple-macosx -global-isel -o - %s | FileCheck --check-prefix=GISEL %s
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define i32 @switch_with_matching_dests_0_and_pow2_3_cases(i8 %v) {
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; CHECK-LABEL: switch_with_matching_dests_0_and_pow2_3_cases:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: mov w9, #100 ; =0x64
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; CHECK-NEXT: mov w8, #20 ; =0x14
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; CHECK-NEXT: LBB0_1: ; %loop.header
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ands w10, w0, #0xff
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; CHECK-NEXT: b.eq LBB0_6
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; CHECK-NEXT: ; %bb.2: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: cmp w10, #32
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; CHECK-NEXT: b.eq LBB0_6
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; CHECK-NEXT: ; %bb.3: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: cmp w10, #124
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; CHECK-NEXT: b.eq LBB0_7
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; CHECK-NEXT: ; %bb.4: ; %loop.latch
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; CHECK-NEXT: ; in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: subs w9, w9, #1
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; CHECK-NEXT: b.ne LBB0_1
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; CHECK-NEXT: ; %bb.5:
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; CHECK-NEXT: mov w8, #20 ; =0x14
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; CHECK-NEXT: LBB0_6: ; %common.ret
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; CHECK-NEXT: mov w0, w8
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB0_7: ; %e2
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; CHECK-NEXT: mov w0, #30 ; =0x1e
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; CHECK-NEXT: ret
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;
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; GISEL-LABEL: switch_with_matching_dests_0_and_pow2_3_cases:
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; GISEL: ; %bb.0: ; %entry
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; GISEL-NEXT: mov w8, w0
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; GISEL-NEXT: mov w0, #20 ; =0x14
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; GISEL-NEXT: mov w9, #100 ; =0x64
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; GISEL-NEXT: LBB0_1: ; %loop.header
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; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
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; GISEL-NEXT: ands w10, w8, #0xff
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; GISEL-NEXT: b.eq LBB0_5
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; GISEL-NEXT: ; %bb.2: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB0_1 Depth=1
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; GISEL-NEXT: cmp w10, #32
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; GISEL-NEXT: b.eq LBB0_5
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; GISEL-NEXT: ; %bb.3: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB0_1 Depth=1
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; GISEL-NEXT: cmp w10, #124
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; GISEL-NEXT: b.eq LBB0_6
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; GISEL-NEXT: ; %bb.4: ; %loop.latch
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; GISEL-NEXT: ; in Loop: Header=BB0_1 Depth=1
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; GISEL-NEXT: subs w9, w9, #1
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; GISEL-NEXT: b.ne LBB0_1
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; GISEL-NEXT: LBB0_5: ; %common.ret
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; GISEL-NEXT: ret
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; GISEL-NEXT: LBB0_6: ; %e2
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; GISEL-NEXT: mov w0, #30 ; =0x1e
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; GISEL-NEXT: ret
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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switch i8 %v, label %loop.latch [
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i8 32, label %e1
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i8 0, label %e1
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i8 124, label %e2
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]
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loop.latch:
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%iv.next = add i32 %iv, 1
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%c = icmp eq i32 %iv.next, 100
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br i1 %c, label %e1, label %loop.header
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e1:
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ret i32 20
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e2:
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ret i32 30
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}
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define i32 @switch_with_matching_dests_0_and_pow2_3_cases_swapped(i8 %v) {
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; CHECK-LABEL: switch_with_matching_dests_0_and_pow2_3_cases_swapped:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: mov w9, #100 ; =0x64
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; CHECK-NEXT: mov w8, #20 ; =0x14
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; CHECK-NEXT: LBB1_1: ; %loop.header
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ands w10, w0, #0xff
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; CHECK-NEXT: b.eq LBB1_6
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; CHECK-NEXT: ; %bb.2: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB1_1 Depth=1
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; CHECK-NEXT: cmp w10, #32
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; CHECK-NEXT: b.eq LBB1_6
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; CHECK-NEXT: ; %bb.3: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB1_1 Depth=1
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; CHECK-NEXT: cmp w10, #124
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; CHECK-NEXT: b.eq LBB1_7
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; CHECK-NEXT: ; %bb.4: ; %loop.latch
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; CHECK-NEXT: ; in Loop: Header=BB1_1 Depth=1
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; CHECK-NEXT: subs w9, w9, #1
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; CHECK-NEXT: b.ne LBB1_1
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; CHECK-NEXT: ; %bb.5:
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; CHECK-NEXT: mov w8, #10 ; =0xa
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; CHECK-NEXT: LBB1_6: ; %common.ret
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; CHECK-NEXT: mov w0, w8
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB1_7: ; %e2
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; CHECK-NEXT: mov w0, #30 ; =0x1e
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; CHECK-NEXT: ret
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;
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; GISEL-LABEL: switch_with_matching_dests_0_and_pow2_3_cases_swapped:
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; GISEL: ; %bb.0: ; %entry
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; GISEL-NEXT: mov w9, #100 ; =0x64
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; GISEL-NEXT: mov w8, #20 ; =0x14
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; GISEL-NEXT: LBB1_1: ; %loop.header
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; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
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; GISEL-NEXT: ands w10, w0, #0xff
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; GISEL-NEXT: b.eq LBB1_6
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; GISEL-NEXT: ; %bb.2: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB1_1 Depth=1
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; GISEL-NEXT: cmp w10, #32
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; GISEL-NEXT: b.eq LBB1_6
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; GISEL-NEXT: ; %bb.3: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB1_1 Depth=1
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; GISEL-NEXT: cmp w10, #124
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; GISEL-NEXT: b.eq LBB1_7
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; GISEL-NEXT: ; %bb.4: ; %loop.latch
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; GISEL-NEXT: ; in Loop: Header=BB1_1 Depth=1
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; GISEL-NEXT: subs w9, w9, #1
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; GISEL-NEXT: b.ne LBB1_1
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; GISEL-NEXT: ; %bb.5:
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; GISEL-NEXT: mov w8, #10 ; =0xa
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; GISEL-NEXT: LBB1_6: ; %common.ret
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; GISEL-NEXT: mov w0, w8
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; GISEL-NEXT: ret
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; GISEL-NEXT: LBB1_7: ; %e2
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; GISEL-NEXT: mov w0, #30 ; =0x1e
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; GISEL-NEXT: ret
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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switch i8 %v, label %loop.latch [
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i8 0, label %e1
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i8 32, label %e1
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i8 124, label %e2
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]
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loop.latch:
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%iv.next = add i32 %iv, 1
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%c = icmp eq i32 %iv.next, 100
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br i1 %c, label %e0, label %loop.header
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e0:
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ret i32 10
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e1:
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ret i32 20
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e2:
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ret i32 30
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}
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define i32 @switch_with_matching_dests_0_and_pow2_3_cases_with_phi(i8 %v, i1 %c) {
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; CHECK-LABEL: switch_with_matching_dests_0_and_pow2_3_cases_with_phi:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: tbz w1, #0, LBB2_8
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; CHECK-NEXT: ; %bb.1: ; %loop.header.preheader
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; CHECK-NEXT: mov w9, #100 ; =0x64
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; CHECK-NEXT: mov w8, #20 ; =0x14
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; CHECK-NEXT: LBB2_2: ; %loop.header
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ands w10, w0, #0xff
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; CHECK-NEXT: b.eq LBB2_7
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; CHECK-NEXT: ; %bb.3: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; CHECK-NEXT: cmp w10, #32
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; CHECK-NEXT: b.eq LBB2_7
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; CHECK-NEXT: ; %bb.4: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; CHECK-NEXT: cmp w10, #124
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; CHECK-NEXT: b.eq LBB2_9
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; CHECK-NEXT: ; %bb.5: ; %loop.latch
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; CHECK-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; CHECK-NEXT: subs w9, w9, #1
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; CHECK-NEXT: b.ne LBB2_2
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; CHECK-NEXT: ; %bb.6:
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; CHECK-NEXT: mov w8, #10 ; =0xa
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; CHECK-NEXT: LBB2_7: ; %common.ret
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; CHECK-NEXT: mov w0, w8
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB2_8:
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; CHECK-NEXT: mov w0, wzr
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB2_9: ; %e2
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; CHECK-NEXT: mov w0, #30 ; =0x1e
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; CHECK-NEXT: ret
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;
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; GISEL-LABEL: switch_with_matching_dests_0_and_pow2_3_cases_with_phi:
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; GISEL: ; %bb.0: ; %entry
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; GISEL-NEXT: mov w8, wzr
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; GISEL-NEXT: tbz w1, #0, LBB2_7
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; GISEL-NEXT: ; %bb.1: ; %loop.header.preheader
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; GISEL-NEXT: mov w9, #100 ; =0x64
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; GISEL-NEXT: mov w8, #20 ; =0x14
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; GISEL-NEXT: LBB2_2: ; %loop.header
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; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
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; GISEL-NEXT: ands w10, w0, #0xff
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; GISEL-NEXT: b.eq LBB2_7
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; GISEL-NEXT: ; %bb.3: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; GISEL-NEXT: cmp w10, #32
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; GISEL-NEXT: b.eq LBB2_7
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; GISEL-NEXT: ; %bb.4: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; GISEL-NEXT: cmp w10, #124
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; GISEL-NEXT: b.eq LBB2_8
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; GISEL-NEXT: ; %bb.5: ; %loop.latch
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; GISEL-NEXT: ; in Loop: Header=BB2_2 Depth=1
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; GISEL-NEXT: subs w9, w9, #1
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; GISEL-NEXT: b.ne LBB2_2
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; GISEL-NEXT: ; %bb.6:
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; GISEL-NEXT: mov w8, #10 ; =0xa
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; GISEL-NEXT: LBB2_7: ; %common.ret
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; GISEL-NEXT: mov w0, w8
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; GISEL-NEXT: ret
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; GISEL-NEXT: LBB2_8: ; %e2
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; GISEL-NEXT: mov w0, #30 ; =0x1e
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; GISEL-NEXT: ret
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entry:
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br i1 %c, label %then, label %e1
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then:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %then], [ %iv.next, %loop.latch ]
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switch i8 %v, label %loop.latch [
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i8 32, label %e1
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i8 0, label %e1
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i8 124, label %e2
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]
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loop.latch:
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%iv.next = add i32 %iv, 1
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%ec = icmp eq i32 %iv.next, 100
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br i1 %ec, label %e0, label %loop.header
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e0:
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ret i32 10
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e1:
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%p = phi i32 [ 0, %entry ], [ 20, %loop.header ], [ 20, %loop.header ]
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ret i32 %p
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e2:
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ret i32 30
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}
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define i32 @switch_with_matching_dests_0_and_pow2_3_cases_all_different_succs(i8 %v) {
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; CHECK-LABEL: switch_with_matching_dests_0_and_pow2_3_cases_all_different_succs:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: mov w8, #100 ; =0x64
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; CHECK-NEXT: LBB3_1: ; %loop.header
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ands w9, w0, #0xff
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; CHECK-NEXT: b.eq LBB3_6
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; CHECK-NEXT: ; %bb.2: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB3_1 Depth=1
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; CHECK-NEXT: cmp w9, #32
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; CHECK-NEXT: b.eq LBB3_8
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; CHECK-NEXT: ; %bb.3: ; %loop.header
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; CHECK-NEXT: ; in Loop: Header=BB3_1 Depth=1
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; CHECK-NEXT: cmp w9, #124
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; CHECK-NEXT: b.eq LBB3_7
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; CHECK-NEXT: ; %bb.4: ; %loop.latch
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; CHECK-NEXT: ; in Loop: Header=BB3_1 Depth=1
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; CHECK-NEXT: subs w8, w8, #1
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; CHECK-NEXT: b.ne LBB3_1
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; CHECK-NEXT: ; %bb.5:
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; CHECK-NEXT: mov w0, #10 ; =0xa
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB3_6: ; %e2
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; CHECK-NEXT: mov w0, #30 ; =0x1e
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB3_7: ; %e3
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; CHECK-NEXT: mov w0, #40 ; =0x28
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB3_8:
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; CHECK-NEXT: mov w0, #20 ; =0x14
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; CHECK-NEXT: ret
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;
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; GISEL-LABEL: switch_with_matching_dests_0_and_pow2_3_cases_all_different_succs:
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; GISEL: ; %bb.0: ; %entry
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; GISEL-NEXT: mov w8, #100 ; =0x64
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; GISEL-NEXT: LBB3_1: ; %loop.header
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; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
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; GISEL-NEXT: ands w9, w0, #0xff
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; GISEL-NEXT: b.eq LBB3_6
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; GISEL-NEXT: ; %bb.2: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB3_1 Depth=1
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; GISEL-NEXT: cmp w9, #32
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; GISEL-NEXT: b.eq LBB3_8
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; GISEL-NEXT: ; %bb.3: ; %loop.header
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; GISEL-NEXT: ; in Loop: Header=BB3_1 Depth=1
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; GISEL-NEXT: cmp w9, #124
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; GISEL-NEXT: b.eq LBB3_7
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; GISEL-NEXT: ; %bb.4: ; %loop.latch
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; GISEL-NEXT: ; in Loop: Header=BB3_1 Depth=1
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; GISEL-NEXT: subs w8, w8, #1
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; GISEL-NEXT: b.ne LBB3_1
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; GISEL-NEXT: ; %bb.5:
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; GISEL-NEXT: mov w0, #10 ; =0xa
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; GISEL-NEXT: ret
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; GISEL-NEXT: LBB3_6: ; %e2
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; GISEL-NEXT: mov w0, #30 ; =0x1e
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; GISEL-NEXT: ret
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; GISEL-NEXT: LBB3_7: ; %e3
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; GISEL-NEXT: mov w0, #40 ; =0x28
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; GISEL-NEXT: ret
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; GISEL-NEXT: LBB3_8:
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; GISEL-NEXT: mov w0, #20 ; =0x14
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; GISEL-NEXT: ret
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entry:
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br label %loop.header
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loop.header:
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%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
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switch i8 %v, label %loop.latch [
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i8 32, label %e1
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i8 0, label %e2
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i8 124, label %e3
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]
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loop.latch:
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%iv.next = add i32 %iv, 1
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%ec = icmp eq i32 %iv.next, 100
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br i1 %ec, label %e0, label %loop.header
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e0:
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ret i32 10
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e1:
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ret i32 20
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e2:
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ret i32 30
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e3:
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ret i32 40
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}
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define i32 @switch_in_loop_with_matching_dests_0_and_pow2_3_cases(ptr %start) {
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; CHECK-LABEL: switch_in_loop_with_matching_dests_0_and_pow2_3_cases:
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; CHECK: ; %bb.0: ; %entry
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; CHECK-NEXT: add x8, x0, #1
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; CHECK-NEXT: LBB4_1: ; %loop
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; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldrb w9, [x8], #1
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; CHECK-NEXT: cbz w9, LBB4_4
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; CHECK-NEXT: ; %bb.2: ; %loop
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; CHECK-NEXT: ; in Loop: Header=BB4_1 Depth=1
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; CHECK-NEXT: cmp w9, #124
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; CHECK-NEXT: b.eq LBB4_5
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; CHECK-NEXT: ; %bb.3: ; %loop
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; CHECK-NEXT: ; in Loop: Header=BB4_1 Depth=1
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; CHECK-NEXT: cmp w9, #32
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; CHECK-NEXT: b.ne LBB4_1
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; CHECK-NEXT: LBB4_4: ; %e1
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; CHECK-NEXT: mov w0, #-1 ; =0xffffffff
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; CHECK-NEXT: ret
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; CHECK-NEXT: LBB4_5: ; %e2.loopexit
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; CHECK-NEXT: mov w0, wzr
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; CHECK-NEXT: ret
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;
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; GISEL-LABEL: switch_in_loop_with_matching_dests_0_and_pow2_3_cases:
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; GISEL: ; %bb.0: ; %entry
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; GISEL-NEXT: add x8, x0, #1
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; GISEL-NEXT: LBB4_1: ; %loop
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; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
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; GISEL-NEXT: ldrb w9, [x8], #1
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; GISEL-NEXT: cbz w9, LBB4_4
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|
; GISEL-NEXT: ; %bb.2: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB4_1 Depth=1
|
|
; GISEL-NEXT: cmp w9, #124
|
|
; GISEL-NEXT: b.eq LBB4_5
|
|
; GISEL-NEXT: ; %bb.3: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB4_1 Depth=1
|
|
; GISEL-NEXT: cmp w9, #32
|
|
; GISEL-NEXT: b.ne LBB4_1
|
|
; GISEL-NEXT: LBB4_4: ; %e1
|
|
; GISEL-NEXT: mov w0, #-1 ; =0xffffffff
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB4_5: ; %e2.loopexit
|
|
; GISEL-NEXT: mov w0, wzr
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%p = phi ptr [ %start, %entry ], [ %4, %loop ]
|
|
%4 = getelementptr inbounds nuw i8, ptr %p, i64 1
|
|
%l = load i8, ptr %4, align 1
|
|
switch i8 %l, label %loop [
|
|
i8 32, label %e1
|
|
i8 0, label %e1
|
|
i8 124, label %e2
|
|
]
|
|
|
|
e1:
|
|
br label %e2
|
|
|
|
e2:
|
|
%8 = phi i32 [ -1, %e1 ], [ 0, %loop ]
|
|
ret i32 %8
|
|
}
|
|
|
|
define i32 @switch_in_loop_with_matching_dests_0_and_pow2_4_cases(ptr %start) {
|
|
; CHECK-LABEL: switch_in_loop_with_matching_dests_0_and_pow2_4_cases:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: mov x10, #32769 ; =0x8001
|
|
; CHECK-NEXT: mov w8, #1 ; =0x1
|
|
; CHECK-NEXT: add x9, x0, #1
|
|
; CHECK-NEXT: movk x10, #1, lsl #32
|
|
; CHECK-NEXT: b LBB5_2
|
|
; CHECK-NEXT: LBB5_1: ; %loop
|
|
; CHECK-NEXT: ; in Loop: Header=BB5_2 Depth=1
|
|
; CHECK-NEXT: cmp w11, #124
|
|
; CHECK-NEXT: b.eq LBB5_5
|
|
; CHECK-NEXT: LBB5_2: ; %loop
|
|
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: ldrb w11, [x9], #1
|
|
; CHECK-NEXT: cmp w11, #32
|
|
; CHECK-NEXT: b.hi LBB5_1
|
|
; CHECK-NEXT: ; %bb.3: ; %loop
|
|
; CHECK-NEXT: ; in Loop: Header=BB5_2 Depth=1
|
|
; CHECK-NEXT: lsl x12, x8, x11
|
|
; CHECK-NEXT: tst x12, x10
|
|
; CHECK-NEXT: b.eq LBB5_1
|
|
; CHECK-NEXT: ; %bb.4: ; %e1
|
|
; CHECK-NEXT: mov w0, #-1 ; =0xffffffff
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: LBB5_5: ; %e2.loopexit
|
|
; CHECK-NEXT: mov w0, wzr
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: switch_in_loop_with_matching_dests_0_and_pow2_4_cases:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: mov x10, #32769 ; =0x8001
|
|
; GISEL-NEXT: mov w8, #1 ; =0x1
|
|
; GISEL-NEXT: add x9, x0, #1
|
|
; GISEL-NEXT: movk x10, #1, lsl #32
|
|
; GISEL-NEXT: b LBB5_2
|
|
; GISEL-NEXT: LBB5_1: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB5_2 Depth=1
|
|
; GISEL-NEXT: cmp w11, #124
|
|
; GISEL-NEXT: b.eq LBB5_5
|
|
; GISEL-NEXT: LBB5_2: ; %loop
|
|
; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; GISEL-NEXT: ldrb w11, [x9], #1
|
|
; GISEL-NEXT: cmp w11, #32
|
|
; GISEL-NEXT: b.hi LBB5_1
|
|
; GISEL-NEXT: ; %bb.3: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB5_2 Depth=1
|
|
; GISEL-NEXT: lsl x12, x8, x11
|
|
; GISEL-NEXT: tst x12, x10
|
|
; GISEL-NEXT: b.eq LBB5_1
|
|
; GISEL-NEXT: ; %bb.4: ; %e1
|
|
; GISEL-NEXT: mov w0, #-1 ; =0xffffffff
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB5_5: ; %e2.loopexit
|
|
; GISEL-NEXT: mov w0, wzr
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%p = phi ptr [ %start, %entry ], [ %4, %loop ]
|
|
%4 = getelementptr inbounds nuw i8, ptr %p, i64 1
|
|
%l = load i8, ptr %4, align 1
|
|
switch i8 %l, label %loop [
|
|
i8 0, label %e1
|
|
i8 15, label %e1
|
|
i8 32, label %e1
|
|
i8 124, label %e2
|
|
]
|
|
|
|
e1:
|
|
br label %e2
|
|
|
|
e2:
|
|
%8 = phi i32 [ -1, %e1 ], [ 0, %loop ]
|
|
ret i32 %8
|
|
}
|
|
|
|
define i32 @switch_in_loop_with_matching_dests_0_and_non_pow2(ptr %start) {
|
|
; CHECK-LABEL: switch_in_loop_with_matching_dests_0_and_non_pow2:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: add x8, x0, #1
|
|
; CHECK-NEXT: LBB6_1: ; %loop
|
|
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: ldrb w9, [x8], #1
|
|
; CHECK-NEXT: cmp w9, #35
|
|
; CHECK-NEXT: b.eq LBB6_4
|
|
; CHECK-NEXT: ; %bb.2: ; %loop
|
|
; CHECK-NEXT: ; in Loop: Header=BB6_1 Depth=1
|
|
; CHECK-NEXT: cmp w9, #33
|
|
; CHECK-NEXT: b.eq LBB6_5
|
|
; CHECK-NEXT: ; %bb.3: ; %loop
|
|
; CHECK-NEXT: ; in Loop: Header=BB6_1 Depth=1
|
|
; CHECK-NEXT: cbnz w9, LBB6_1
|
|
; CHECK-NEXT: LBB6_4: ; %common.ret.loopexit
|
|
; CHECK-NEXT: mov w0, #-1 ; =0xffffffff
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: LBB6_5: ; %e2
|
|
; CHECK-NEXT: mov w0, #10 ; =0xa
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: switch_in_loop_with_matching_dests_0_and_non_pow2:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: add x8, x0, #1
|
|
; GISEL-NEXT: LBB6_1: ; %loop
|
|
; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; GISEL-NEXT: ldrb w9, [x8], #1
|
|
; GISEL-NEXT: cmp w9, #35
|
|
; GISEL-NEXT: b.eq LBB6_4
|
|
; GISEL-NEXT: ; %bb.2: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB6_1 Depth=1
|
|
; GISEL-NEXT: cmp w9, #33
|
|
; GISEL-NEXT: b.eq LBB6_5
|
|
; GISEL-NEXT: ; %bb.3: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB6_1 Depth=1
|
|
; GISEL-NEXT: cbnz w9, LBB6_1
|
|
; GISEL-NEXT: LBB6_4: ; %common.ret.loopexit
|
|
; GISEL-NEXT: mov w0, #-1 ; =0xffffffff
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB6_5: ; %e2
|
|
; GISEL-NEXT: mov w0, #10 ; =0xa
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%p = phi ptr [ %start, %entry ], [ %4, %loop ]
|
|
%4 = getelementptr inbounds nuw i8, ptr %p, i64 1
|
|
%l = load i8, ptr %4, align 1
|
|
switch i8 %l, label %loop [
|
|
i8 0, label %e1
|
|
i8 35, label %e1
|
|
i8 33, label %e2
|
|
]
|
|
|
|
e1:
|
|
ret i32 -1
|
|
|
|
e2:
|
|
ret i32 10
|
|
}
|
|
|
|
define void @test_successor_with_loop_phi(ptr %A, ptr %B) {
|
|
; CHECK-LABEL: test_successor_with_loop_phi:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: LBB7_1: ; %loop
|
|
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: ldr w8, [x0]
|
|
; CHECK-NEXT: str wzr, [x0]
|
|
; CHECK-NEXT: mov x0, x1
|
|
; CHECK-NEXT: tst w8, #0xfffffffb
|
|
; CHECK-NEXT: b.eq LBB7_1
|
|
; CHECK-NEXT: ; %bb.2: ; %exit
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: test_successor_with_loop_phi:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: LBB7_1: ; %loop
|
|
; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; GISEL-NEXT: ldr w8, [x0]
|
|
; GISEL-NEXT: str wzr, [x0]
|
|
; GISEL-NEXT: mov x0, x1
|
|
; GISEL-NEXT: cbz w8, LBB7_1
|
|
; GISEL-NEXT: ; %bb.2: ; %loop
|
|
; GISEL-NEXT: ; in Loop: Header=BB7_1 Depth=1
|
|
; GISEL-NEXT: cmp w8, #4
|
|
; GISEL-NEXT: mov x0, x1
|
|
; GISEL-NEXT: b.eq LBB7_1
|
|
; GISEL-NEXT: ; %bb.3: ; %exit
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop
|
|
|
|
loop:
|
|
%p = phi ptr [ %A, %entry ], [ %B , %loop ], [ %B, %loop ]
|
|
%l = load i32, ptr %p
|
|
store i32 0, ptr %p
|
|
switch i32 %l, label %exit [
|
|
i32 4, label %loop
|
|
i32 0, label %loop
|
|
]
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
define i64 @consecutive_match_both(ptr %p, i32 %param) {
|
|
; CHECK-LABEL: consecutive_match_both:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: mov w8, #1 ; =0x1
|
|
; CHECK-NEXT: mov w9, #100 ; =0x64
|
|
; CHECK-NEXT: mov w10, #249 ; =0xf9
|
|
; CHECK-NEXT: lsl w8, w8, w1
|
|
; CHECK-NEXT: b LBB8_2
|
|
; CHECK-NEXT: LBB8_1: ; %loop.latch
|
|
; CHECK-NEXT: ; in Loop: Header=BB8_2 Depth=1
|
|
; CHECK-NEXT: subs w9, w9, #1
|
|
; CHECK-NEXT: b.eq LBB8_5
|
|
; CHECK-NEXT: LBB8_2: ; %loop.header
|
|
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: cmp w1, #7
|
|
; CHECK-NEXT: b.hi LBB8_1
|
|
; CHECK-NEXT: ; %bb.3: ; %loop.header
|
|
; CHECK-NEXT: ; in Loop: Header=BB8_2 Depth=1
|
|
; CHECK-NEXT: tst w8, w10
|
|
; CHECK-NEXT: b.eq LBB8_1
|
|
; CHECK-NEXT: ; %bb.4: ; %e0
|
|
; CHECK-NEXT: mov x0, xzr
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: LBB8_5:
|
|
; CHECK-NEXT: mov x0, #-42 ; =0xffffffffffffffd6
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: consecutive_match_both:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: mov w8, #1 ; =0x1
|
|
; GISEL-NEXT: mov w9, #100 ; =0x64
|
|
; GISEL-NEXT: mov w10, #249 ; =0xf9
|
|
; GISEL-NEXT: lsl w8, w8, w1
|
|
; GISEL-NEXT: b LBB8_2
|
|
; GISEL-NEXT: LBB8_1: ; %loop.latch
|
|
; GISEL-NEXT: ; in Loop: Header=BB8_2 Depth=1
|
|
; GISEL-NEXT: subs w9, w9, #1
|
|
; GISEL-NEXT: b.eq LBB8_5
|
|
; GISEL-NEXT: LBB8_2: ; %loop.header
|
|
; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; GISEL-NEXT: cmp w1, #7
|
|
; GISEL-NEXT: b.hi LBB8_1
|
|
; GISEL-NEXT: ; %bb.3: ; %loop.header
|
|
; GISEL-NEXT: ; in Loop: Header=BB8_2 Depth=1
|
|
; GISEL-NEXT: tst w8, w10
|
|
; GISEL-NEXT: b.eq LBB8_1
|
|
; GISEL-NEXT: ; %bb.4: ; %e0
|
|
; GISEL-NEXT: mov x0, xzr
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB8_5:
|
|
; GISEL-NEXT: mov x0, #-42 ; =0xffffffffffffffd6
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
switch i32 %param, label %loop.latch [
|
|
i32 7, label %e0
|
|
i32 6, label %e0
|
|
i32 5, label %e0
|
|
i32 4, label %e0
|
|
i32 3, label %e0
|
|
i32 0, label %e0
|
|
]
|
|
|
|
loop.latch:
|
|
%iv.next = add i32 %iv, 1
|
|
%ec = icmp eq i32 %iv.next, 100
|
|
br i1 %ec, label %e1, label %loop.header
|
|
|
|
e0:
|
|
%m = getelementptr i8, ptr %p, i64 20
|
|
br label %e1
|
|
|
|
e1:
|
|
%res = phi i64 [ 0, %e0 ], [ -42, %loop.latch ]
|
|
ret i64 %res
|
|
}
|
|
|
|
define i64 @consecutive_match_before(ptr %p, i32 %param) {
|
|
; CHECK-LABEL: consecutive_match_before:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: mov w8, #1 ; =0x1
|
|
; CHECK-NEXT: mov w9, #100 ; =0x64
|
|
; CHECK-NEXT: mov w10, #25 ; =0x19
|
|
; CHECK-NEXT: lsl w8, w8, w1
|
|
; CHECK-NEXT: b LBB9_2
|
|
; CHECK-NEXT: LBB9_1: ; %loop.latch
|
|
; CHECK-NEXT: ; in Loop: Header=BB9_2 Depth=1
|
|
; CHECK-NEXT: subs w9, w9, #1
|
|
; CHECK-NEXT: b.eq LBB9_5
|
|
; CHECK-NEXT: LBB9_2: ; %loop.header
|
|
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: cmp w1, #4
|
|
; CHECK-NEXT: b.hi LBB9_1
|
|
; CHECK-NEXT: ; %bb.3: ; %loop.header
|
|
; CHECK-NEXT: ; in Loop: Header=BB9_2 Depth=1
|
|
; CHECK-NEXT: tst w8, w10
|
|
; CHECK-NEXT: b.eq LBB9_1
|
|
; CHECK-NEXT: ; %bb.4: ; %e0
|
|
; CHECK-NEXT: mov x0, xzr
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: LBB9_5:
|
|
; CHECK-NEXT: mov x0, #-42 ; =0xffffffffffffffd6
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: consecutive_match_before:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: mov w8, #1 ; =0x1
|
|
; GISEL-NEXT: mov w9, #100 ; =0x64
|
|
; GISEL-NEXT: mov w10, #25 ; =0x19
|
|
; GISEL-NEXT: lsl w8, w8, w1
|
|
; GISEL-NEXT: b LBB9_2
|
|
; GISEL-NEXT: LBB9_1: ; %loop.latch
|
|
; GISEL-NEXT: ; in Loop: Header=BB9_2 Depth=1
|
|
; GISEL-NEXT: subs w9, w9, #1
|
|
; GISEL-NEXT: b.eq LBB9_5
|
|
; GISEL-NEXT: LBB9_2: ; %loop.header
|
|
; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; GISEL-NEXT: cmp w1, #4
|
|
; GISEL-NEXT: b.hi LBB9_1
|
|
; GISEL-NEXT: ; %bb.3: ; %loop.header
|
|
; GISEL-NEXT: ; in Loop: Header=BB9_2 Depth=1
|
|
; GISEL-NEXT: tst w8, w10
|
|
; GISEL-NEXT: b.eq LBB9_1
|
|
; GISEL-NEXT: ; %bb.4: ; %e0
|
|
; GISEL-NEXT: mov x0, xzr
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB9_5:
|
|
; GISEL-NEXT: mov x0, #-42 ; =0xffffffffffffffd6
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
switch i32 %param, label %loop.latch [
|
|
i32 4, label %e0
|
|
i32 3, label %e0
|
|
i32 0, label %e0
|
|
]
|
|
|
|
loop.latch:
|
|
%iv.next = add i32 %iv, 1
|
|
%ec = icmp eq i32 %iv.next, 100
|
|
br i1 %ec, label %e1, label %loop.header
|
|
|
|
e0:
|
|
%m = getelementptr i8, ptr %p, i64 20
|
|
br label %e1
|
|
|
|
e1:
|
|
%res = phi i64 [ 0, %e0 ], [ -42, %loop.latch ]
|
|
ret i64 %res
|
|
}
|
|
|
|
define i64 @consecutive_match_after(ptr %p, i32 %param) {
|
|
; CHECK-LABEL: consecutive_match_after:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: mov w8, #1 ; =0x1
|
|
; CHECK-NEXT: mov w9, #100 ; =0x64
|
|
; CHECK-NEXT: mov w10, #49 ; =0x31
|
|
; CHECK-NEXT: lsl w8, w8, w1
|
|
; CHECK-NEXT: b LBB10_2
|
|
; CHECK-NEXT: LBB10_1: ; %loop.latch
|
|
; CHECK-NEXT: ; in Loop: Header=BB10_2 Depth=1
|
|
; CHECK-NEXT: subs w9, w9, #1
|
|
; CHECK-NEXT: b.eq LBB10_5
|
|
; CHECK-NEXT: LBB10_2: ; %loop.header
|
|
; CHECK-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; CHECK-NEXT: cmp w1, #5
|
|
; CHECK-NEXT: b.hi LBB10_1
|
|
; CHECK-NEXT: ; %bb.3: ; %loop.header
|
|
; CHECK-NEXT: ; in Loop: Header=BB10_2 Depth=1
|
|
; CHECK-NEXT: tst w8, w10
|
|
; CHECK-NEXT: b.eq LBB10_1
|
|
; CHECK-NEXT: ; %bb.4: ; %e0
|
|
; CHECK-NEXT: mov x0, xzr
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: LBB10_5:
|
|
; CHECK-NEXT: mov x0, #-42 ; =0xffffffffffffffd6
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: consecutive_match_after:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: mov w8, #1 ; =0x1
|
|
; GISEL-NEXT: mov w9, #100 ; =0x64
|
|
; GISEL-NEXT: mov w10, #49 ; =0x31
|
|
; GISEL-NEXT: lsl w8, w8, w1
|
|
; GISEL-NEXT: b LBB10_2
|
|
; GISEL-NEXT: LBB10_1: ; %loop.latch
|
|
; GISEL-NEXT: ; in Loop: Header=BB10_2 Depth=1
|
|
; GISEL-NEXT: subs w9, w9, #1
|
|
; GISEL-NEXT: b.eq LBB10_5
|
|
; GISEL-NEXT: LBB10_2: ; %loop.header
|
|
; GISEL-NEXT: ; =>This Inner Loop Header: Depth=1
|
|
; GISEL-NEXT: cmp w1, #5
|
|
; GISEL-NEXT: b.hi LBB10_1
|
|
; GISEL-NEXT: ; %bb.3: ; %loop.header
|
|
; GISEL-NEXT: ; in Loop: Header=BB10_2 Depth=1
|
|
; GISEL-NEXT: tst w8, w10
|
|
; GISEL-NEXT: b.eq LBB10_1
|
|
; GISEL-NEXT: ; %bb.4: ; %e0
|
|
; GISEL-NEXT: mov x0, xzr
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB10_5:
|
|
; GISEL-NEXT: mov x0, #-42 ; =0xffffffffffffffd6
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
br label %loop.header
|
|
|
|
loop.header:
|
|
%iv = phi i32 [ 0, %entry ], [ %iv.next, %loop.latch ]
|
|
switch i32 %param, label %loop.latch [
|
|
i32 5, label %e0
|
|
i32 4, label %e0
|
|
i32 0, label %e0
|
|
]
|
|
|
|
loop.latch:
|
|
%iv.next = add i32 %iv, 1
|
|
%ec = icmp eq i32 %iv.next, 100
|
|
br i1 %ec, label %e1, label %loop.header
|
|
|
|
e0:
|
|
%m = getelementptr i8, ptr %p, i64 20
|
|
br label %e1
|
|
|
|
e1:
|
|
%res = phi i64 [ 0, %e0 ], [ -42, %loop.latch ]
|
|
ret i64 %res
|
|
}
|
|
|
|
define void @merge_with_stores(ptr %A, i16 %v) {
|
|
; CHECK-LABEL: merge_with_stores:
|
|
; CHECK: ; %bb.0: ; %entry
|
|
; CHECK-NEXT: and w8, w1, #0xffff
|
|
; CHECK-NEXT: sub w9, w8, #10
|
|
; CHECK-NEXT: cmp w9, #2
|
|
; CHECK-NEXT: b.lo LBB11_4
|
|
; CHECK-NEXT: ; %bb.1: ; %entry
|
|
; CHECK-NEXT: cbz w8, LBB11_5
|
|
; CHECK-NEXT: ; %bb.2: ; %entry
|
|
; CHECK-NEXT: cmp w8, #2
|
|
; CHECK-NEXT: b.eq LBB11_5
|
|
; CHECK-NEXT: ; %bb.3: ; %default.dst
|
|
; CHECK-NEXT: strh wzr, [x0]
|
|
; CHECK-NEXT: ret
|
|
; CHECK-NEXT: LBB11_4: ; %other.dst
|
|
; CHECK-NEXT: mov w8, #1 ; =0x1
|
|
; CHECK-NEXT: strh w8, [x0, #36]
|
|
; CHECK-NEXT: LBB11_5: ; %pow2.dst
|
|
; CHECK-NEXT: ret
|
|
;
|
|
; GISEL-LABEL: merge_with_stores:
|
|
; GISEL: ; %bb.0: ; %entry
|
|
; GISEL-NEXT: and w8, w1, #0xffff
|
|
; GISEL-NEXT: sub w9, w8, #10
|
|
; GISEL-NEXT: cmp w9, #1
|
|
; GISEL-NEXT: b.ls LBB11_4
|
|
; GISEL-NEXT: ; %bb.1: ; %entry
|
|
; GISEL-NEXT: cbz w8, LBB11_5
|
|
; GISEL-NEXT: ; %bb.2: ; %entry
|
|
; GISEL-NEXT: cmp w8, #2
|
|
; GISEL-NEXT: b.eq LBB11_5
|
|
; GISEL-NEXT: ; %bb.3: ; %default.dst
|
|
; GISEL-NEXT: strh wzr, [x0]
|
|
; GISEL-NEXT: ret
|
|
; GISEL-NEXT: LBB11_4: ; %other.dst
|
|
; GISEL-NEXT: mov w8, #1 ; =0x1
|
|
; GISEL-NEXT: strh w8, [x0, #36]
|
|
; GISEL-NEXT: LBB11_5: ; %pow2.dst
|
|
; GISEL-NEXT: ret
|
|
entry:
|
|
switch i16 %v, label %default.dst [
|
|
i16 10, label %other.dst
|
|
i16 0, label %pow2.dst
|
|
i16 2, label %pow2.dst
|
|
i16 11, label %other.dst
|
|
]
|
|
|
|
default.dst:
|
|
store i16 0, ptr %A, align 8
|
|
br label %pow2.dst
|
|
|
|
other.dst:
|
|
%gep = getelementptr i8, ptr %A, i64 36
|
|
store i16 1, ptr %gep, align 8
|
|
br label %pow2.dst
|
|
|
|
pow2.dst:
|
|
ret void
|
|
}
|