352c48f278
The Target hook convertSelectOfConstantsToMath() needs to be used within SimplifySelectCC helper combine function in SelectionDAG Isel, where generic select folding with constants is happening into simple maths op using the condition as it is. It necessarily fixes #121145.
148 lines
5.1 KiB
LLVM
148 lines
5.1 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: opt -mtriple=aarch64-linux-gnu -passes=typepromotion < %s | llc -mtriple=aarch64-linux-gnu -o - | FileCheck %s
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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%struct.bar = type { %struct.foo }
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%struct.foo = type { ptr }
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%struct.wobble = type { ptr }
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%struct.zot = type <{ %struct.wobble, ptr, ptr, i8, [7 x i8] }>
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@global = external global %struct.bar, align 8
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define i64 @bfis_in_loop_zero() {
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; CHECK-LABEL: bfis_in_loop_zero:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adrp x9, :got:global
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; CHECK-NEXT: mov x0, xzr
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; CHECK-NEXT: mov w8, wzr
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; CHECK-NEXT: ldr x9, [x9, :got_lo12:global]
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; CHECK-NEXT: mov w10, #65536 // =0x10000
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; CHECK-NEXT: ldr x9, [x9]
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; CHECK-NEXT: .LBB0_1: // %midblock
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldrh w11, [x9, #72]
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; CHECK-NEXT: and x13, x0, #0xffffffff00000000
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; CHECK-NEXT: lsr w12, w11, #8
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; CHECK-NEXT: cmp w11, #0
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; CHECK-NEXT: csel w8, w8, w12, eq
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; CHECK-NEXT: ldr x12, [x9, #8]
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; CHECK-NEXT: csel x9, xzr, x10, eq
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; CHECK-NEXT: bfi w11, w8, #8, #24
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; CHECK-NEXT: orr x13, x9, x13
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; CHECK-NEXT: ldr x9, [x12, #16]
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; CHECK-NEXT: orr x0, x13, x11
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; CHECK-NEXT: cbnz x12, .LBB0_1
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; CHECK-NEXT: // %bb.2: // %exit
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; CHECK-NEXT: ret
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entry:
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%var = load ptr, ptr @global, align 8
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br label %preheader
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preheader:
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br label %header
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header: ; preds = %bb63, %bb
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%var4 = phi i64 [ %var30, %latch ], [ 0, %preheader ]
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%var5 = phi ptr [ %var38, %latch ], [ %var, %preheader ]
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%var6 = phi i8 [ %var21, %latch ], [ 0, %preheader ]
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br label %midblock
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midblock: ; preds = %bb9
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%var15 = getelementptr inbounds %struct.wobble, ptr %var5, i64 9
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%var17 = load i16, ptr %var15, align 8
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%var18 = icmp eq i16 %var17, 0
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%var19 = lshr i16 %var17, 8
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%var20 = trunc i16 %var19 to i8
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%var21 = select i1 %var18, i8 %var6, i8 %var20
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%var22 = zext i8 %var21 to i16
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%var23 = shl nuw i16 %var22, 8
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%var24 = and i16 %var17, 255
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%var25 = or i16 %var23, %var24
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%var26 = select i1 %var18, i64 0, i64 65536
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%var27 = zext i16 %var25 to i64
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%var28 = and i64 %var4, -4294967296
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%var29 = or i64 %var26, %var28
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%var30 = or i64 %var29, %var27
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br label %latch
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latch: ; preds = %bb14, %bb9
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%var34 = getelementptr inbounds %struct.wobble, ptr %var5, i64 1, i32 0
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%var35 = load ptr, ptr %var34, align 8
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%var36 = icmp eq ptr %var35, null
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%var37 = getelementptr inbounds %struct.zot, ptr %var35, i64 0, i32 2
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%var38 = load ptr, ptr %var37, align 8
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br i1 %var36, label %exit, label %header
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exit:
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ret i64 %var30
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}
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define i64 @bfis_in_loop_undef() {
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; CHECK-LABEL: bfis_in_loop_undef:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: adrp x9, :got:global
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; CHECK-NEXT: mov w8, wzr
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; CHECK-NEXT: // implicit-def: $x0
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; CHECK-NEXT: ldr x9, [x9, :got_lo12:global]
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; CHECK-NEXT: ldr x10, [x9]
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; CHECK-NEXT: mov w9, #65536 // =0x10000
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; CHECK-NEXT: .LBB1_1: // %midblock
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: ldrh w11, [x10, #72]
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; CHECK-NEXT: and x13, x0, #0xffffffff00000000
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; CHECK-NEXT: lsr w12, w11, #8
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; CHECK-NEXT: cmp w11, #0
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; CHECK-NEXT: csel w8, w8, w12, eq
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; CHECK-NEXT: ldr x12, [x10, #8]
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; CHECK-NEXT: csel x10, xzr, x9, eq
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; CHECK-NEXT: bfi w11, w8, #8, #24
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; CHECK-NEXT: orr x13, x10, x13
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; CHECK-NEXT: ldr x10, [x12, #16]
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; CHECK-NEXT: orr x0, x13, x11
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; CHECK-NEXT: cbnz x12, .LBB1_1
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; CHECK-NEXT: // %bb.2: // %exit
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; CHECK-NEXT: ret
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entry:
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%var = load ptr, ptr @global, align 8
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br label %preheader
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preheader:
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br label %header
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header: ; preds = %bb63, %bb
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%var4 = phi i64 [ %var30, %latch ], [ undef, %preheader ]
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%var5 = phi ptr [ %var38, %latch ], [ %var, %preheader ]
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%var6 = phi i8 [ %var21, %latch ], [ undef, %preheader ]
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br label %midblock
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midblock: ; preds = %bb9
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%var15 = getelementptr inbounds %struct.wobble, ptr %var5, i64 9
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%var17 = load i16, ptr %var15, align 8
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%var18 = icmp eq i16 %var17, 0
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%var19 = lshr i16 %var17, 8
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%var20 = trunc i16 %var19 to i8
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%var21 = select i1 %var18, i8 %var6, i8 %var20
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%var22 = zext i8 %var21 to i16
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%var23 = shl nuw i16 %var22, 8
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%var24 = and i16 %var17, 255
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%var25 = or i16 %var23, %var24
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%var26 = select i1 %var18, i64 0, i64 65536
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%var27 = zext i16 %var25 to i64
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%var28 = and i64 %var4, -4294967296
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%var29 = or i64 %var26, %var28
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%var30 = or i64 %var29, %var27
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br label %latch
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latch: ; preds = %bb14, %bb9
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%var34 = getelementptr inbounds %struct.wobble, ptr %var5, i64 1, i32 0
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%var35 = load ptr, ptr %var34, align 8
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%var36 = icmp eq ptr %var35, null
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%var37 = getelementptr inbounds %struct.zot, ptr %var35, i64 0, i32 2
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%var38 = load ptr, ptr %var37, align 8
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br i1 %var36, label %exit, label %header
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exit:
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ret i64 %var30
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}
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