3cfdf2ccdf
This is a follow-up to #137309, adding: - multi-use of the constant with different adds - vectors (vadd.vx -> vsub.vx)
77 lines
1.9 KiB
LLVM
77 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; RUN: llc -mtriple=riscv64 < %s | FileCheck %s --check-prefixes=CHECK,NOZBS
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; RUN: llc -mtriple=riscv64 -mattr=+zbs < %s | FileCheck %s --check-prefixes=CHECK,ZBS
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define i64 @add_b31(i64 %x) {
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; NOZBS-LABEL: add_b31:
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; NOZBS: # %bb.0:
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; NOZBS-NEXT: lui a1, 524288
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; NOZBS-NEXT: sub a0, a0, a1
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; NOZBS-NEXT: ret
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;
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; ZBS-LABEL: add_b31:
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; ZBS: # %bb.0:
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; ZBS-NEXT: bseti a1, zero, 31
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; ZBS-NEXT: add a0, a0, a1
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; ZBS-NEXT: ret
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%add = add i64 %x, 2147483648
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ret i64 %add
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}
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define i64 @add_b32(i64 %x) {
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; NOZBS-LABEL: add_b32:
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; NOZBS: # %bb.0:
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; NOZBS-NEXT: li a1, -1
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; NOZBS-NEXT: slli a1, a1, 32
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; NOZBS-NEXT: add a0, a0, a1
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; NOZBS-NEXT: ret
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;
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; ZBS-LABEL: add_b32:
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; ZBS: # %bb.0:
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; ZBS-NEXT: bseti a1, zero, 32
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; ZBS-NEXT: sub a0, a0, a1
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; ZBS-NEXT: ret
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%add = add i64 %x, -4294967296
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ret i64 %add
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}
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define i64 @sub_0xffffffffff(i64 %x) {
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; CHECK-LABEL: sub_0xffffffffff:
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; CHECK: # %bb.0:
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; CHECK-NEXT: li a1, -1
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; CHECK-NEXT: srli a1, a1, 24
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; CHECK-NEXT: sub a0, a0, a1
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; CHECK-NEXT: ret
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%sub = sub i64 %x, 1099511627775
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ret i64 %sub
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}
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define i64 @add_multiuse(i64 %x) {
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; CHECK-LABEL: add_multiuse:
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; CHECK: # %bb.0:
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; CHECK-NEXT: li a1, -1
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; CHECK-NEXT: slli a1, a1, 40
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; CHECK-NEXT: addi a1, a1, 1
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; CHECK-NEXT: add a0, a0, a1
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; CHECK-NEXT: and a0, a0, a1
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; CHECK-NEXT: ret
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%add = add i64 %x, -1099511627775
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%and = and i64 %add, -1099511627775
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ret i64 %and
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}
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define i64 @add_multiuse_const(i64 %x, i64 %y) {
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; CHECK-LABEL: add_multiuse_const:
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; CHECK: # %bb.0:
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; CHECK-NEXT: li a2, -1
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; CHECK-NEXT: srli a2, a2, 24
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; CHECK-NEXT: sub a0, a0, a2
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; CHECK-NEXT: sub a1, a1, a2
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; CHECK-NEXT: xor a0, a0, a1
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; CHECK-NEXT: ret
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%a = add i64 %x, -1099511627775
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%b = add i64 %y, -1099511627775
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%xor = xor i64 %a, %b
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ret i64 %xor
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}
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