forked from OSchip/llvm-project
69 lines
2.6 KiB
LLVM
69 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
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declare { i32, i1 } @llvm.uadd.with.overflow.i32(i32, i32) #1
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define i32 @f(i32 %a, i32 %b) #0 {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[UADD:%.*]] = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 [[A:%.*]], i32 [[B:%.*]])
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; CHECK-NEXT: [[CMP:%.*]] = extractvalue { i32, i1 } [[UADD]], 1
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; CHECK-NEXT: [[TMP0:%.*]] = extractvalue { i32, i1 } [[UADD]], 0
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; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[CMP]], i32 0, i32 [[TMP0]]
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; CHECK-NEXT: ret i32 [[SPEC_SELECT]]
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;
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entry:
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%uadd = tail call { i32, i1 } @llvm.uadd.with.overflow.i32(i32 %a, i32 %b)
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%cmp = extractvalue { i32, i1 } %uadd, 1
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br i1 %cmp, label %return, label %if.end
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if.end: ; preds = %entry
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%0 = extractvalue { i32, i1 } %uadd, 0
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br label %return
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return: ; preds = %entry, %if.end
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%retval.0 = phi i32 [ %0, %if.end ], [ 0, %entry ]
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ret i32 %retval.0
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}
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define i1 @PR32078(<4 x i32> %a, <4 x i32> %b) {
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; CHECK-LABEL: @PR32078(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq <4 x i32> [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[CMP0:%.*]] = extractelement <4 x i1> [[CMP]], i32 0
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; CHECK-NEXT: [[CMP1:%.*]] = extractelement <4 x i1> [[CMP]], i32 1
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; CHECK-NEXT: [[CMP2:%.*]] = extractelement <4 x i1> [[CMP]], i32 2
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; CHECK-NEXT: [[CMP3:%.*]] = extractelement <4 x i1> [[CMP]], i32 3
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; CHECK-NEXT: [[CMP0_NOT:%.*]] = xor i1 [[CMP0]], true
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; CHECK-NEXT: [[CMP1_NOT:%.*]] = xor i1 [[CMP1]], true
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; CHECK-NEXT: [[BRMERGE:%.*]] = select i1 [[CMP0_NOT]], i1 true, i1 [[CMP1_NOT]]
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; CHECK-NEXT: br i1 [[BRMERGE]], label [[EXIT:%.*]], label [[CMP1_TRUE:%.*]]
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; CHECK: cmp1_true:
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; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[CMP2]], i1 [[CMP3]], i1 false
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; CHECK-NEXT: br label [[EXIT]]
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; CHECK: exit:
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; CHECK-NEXT: [[R:%.*]] = phi i1 [ false, [[ENTRY:%.*]] ], [ [[SPEC_SELECT]], [[CMP1_TRUE]] ]
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; CHECK-NEXT: ret i1 [[R]]
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;
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entry:
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%cmp = icmp eq <4 x i32> %a, %b
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%cmp0 = extractelement <4 x i1> %cmp, i32 0
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%cmp1 = extractelement <4 x i1> %cmp, i32 1
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%cmp2 = extractelement <4 x i1> %cmp, i32 2
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%cmp3 = extractelement <4 x i1> %cmp, i32 3
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br i1 %cmp0, label %cmp0_true, label %exit
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cmp0_true:
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br i1 %cmp1, label %cmp1_true, label %exit
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cmp1_true:
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br i1 %cmp2, label %cmp2_true, label %exit
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cmp2_true:
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br label %exit
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exit:
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%r = phi i1 [ false, %cmp0_true ], [ false, %cmp1_true ], [ false, %entry ], [ %cmp3, %cmp2_true ]
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ret i1 %r
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}
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