61 lines
1.7 KiB
LLVM
61 lines
1.7 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc -mtriple=riscv64 < %s | FileCheck %s
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define i64 @fold_binop_into_select_0(i1 %c, i64 %x) {
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; CHECK-LABEL: fold_binop_into_select_0:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: addi a1, a1, -2
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; CHECK-NEXT: slli a0, a0, 63
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; CHECK-NEXT: srai a0, a0, 63
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; CHECK-NEXT: and a0, a0, a1
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; CHECK-NEXT: ret
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entry:
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%select_ = select i1 %c, i64 %x, i64 2
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%res = sub i64 %select_, 2
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ret i64 %res
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}
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define i64 @fold_binop_into_select_1(i1 %c, i64 %x) {
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; CHECK-LABEL: fold_binop_into_select_1:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: andi a0, a0, 1
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; CHECK-NEXT: addi a1, a1, -2
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; CHECK-NEXT: addi a0, a0, -1
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; CHECK-NEXT: and a0, a0, a1
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; CHECK-NEXT: ret
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entry:
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%select_ = select i1 %c, i64 2, i64 %x
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%res = sub i64 %select_, 2
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ret i64 %res
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}
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define i64 @fold_binop_into_select_2(i1 %c, i64 %x) {
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; CHECK-LABEL: fold_binop_into_select_2:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: li a2, 2
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; CHECK-NEXT: sub a2, a2, a1
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; CHECK-NEXT: slli a0, a0, 63
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; CHECK-NEXT: srai a0, a0, 63
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; CHECK-NEXT: and a0, a0, a2
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; CHECK-NEXT: ret
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entry:
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%select_ = select i1 %c, i64 %x, i64 2
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%res = sub i64 2, %select_
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ret i64 %res
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}
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define i64 @fold_binop_into_select_3(i1 %c, i64 %x) {
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; CHECK-LABEL: fold_binop_into_select_3:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: andi a0, a0, 1
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; CHECK-NEXT: li a2, 2
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; CHECK-NEXT: sub a2, a2, a1
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; CHECK-NEXT: addi a0, a0, -1
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; CHECK-NEXT: and a0, a0, a2
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; CHECK-NEXT: ret
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entry:
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%select_ = select i1 %c, i64 2, i64 %x
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%res = sub i64 2, %select_
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ret i64 %res
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}
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