derek.holloway
7502bf64a4
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65 lines
2.3 KiB
LLVM
65 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; PR32952: Don't erroneously consider congruent two phi nodes which
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; have the same arguments but different incoming edges.
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; RUN: opt -passes=newgvn -S %s | FileCheck %s
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@a = common global i16 0, align 2
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@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
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define i32 @tinkywinky() {
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; CHECK-LABEL: define i32 @tinkywinky() {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load i16, ptr @a, align 2
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; CHECK-NEXT: [[CONV:%.*]] = sext i16 [[TMP0]] to i32
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; CHECK-NEXT: [[NEG:%.*]] = xor i32 [[CONV]], -1
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; CHECK-NEXT: [[CONV1:%.*]] = trunc i32 [[NEG]] to i16
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; CHECK-NEXT: [[CONV3:%.*]] = zext i16 [[CONV1]] to i32
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; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[CONV3]]
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; CHECK-NEXT: br i1 [[CMP]], label [[TINKY:%.*]], label [[WINKY:%.*]]
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; CHECK: tinky:
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; CHECK-NEXT: store i16 2, ptr @a, align 2
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; CHECK-NEXT: br label [[PATATINO:%.*]]
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; CHECK: winky:
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; CHECK-NEXT: br label [[PATATINO]]
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; CHECK: patatino:
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; CHECK-NEXT: [[MEH:%.*]] = phi i16 [ [[TMP0]], [[WINKY]] ], [ [[CONV1]], [[TINKY]] ]
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; CHECK-NEXT: [[BANANA:%.*]] = phi i16 [ [[TMP0]], [[TINKY]] ], [ [[CONV1]], [[WINKY]] ]
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; CHECK-NEXT: br label [[END:%.*]]
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; CHECK: end:
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; CHECK-NEXT: [[PROMOTED:%.*]] = zext i16 [[BANANA]] to i32
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; CHECK-NEXT: [[OTHER:%.*]] = zext i16 [[MEH]] to i32
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; CHECK-NEXT: [[FIRST:%.*]] = tail call i32 (ptr, ...) @printf(ptr @.str, i32 [[PROMOTED]])
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; CHECK-NEXT: [[SECOND:%.*]] = tail call i32 (ptr, ...) @printf(ptr @.str, i32 [[OTHER]])
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; CHECK-NEXT: ret i32 0
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;
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entry:
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%0 = load i16, ptr @a, align 2
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%conv = sext i16 %0 to i32
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%neg = xor i32 %conv, -1
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%conv1 = trunc i32 %neg to i16
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%conv3 = zext i16 %conv1 to i32
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%cmp = icmp slt i32 %conv, %conv3
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br i1 %cmp, label %tinky, label %winky
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tinky:
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store i16 2, ptr @a, align 2
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br label %patatino
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winky:
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br label %patatino
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patatino:
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%meh = phi i16 [ %0, %winky ], [ %conv1, %tinky ]
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%banana = phi i16 [ %0, %tinky ], [ %conv1, %winky ]
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br label %end
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end:
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%promoted = zext i16 %banana to i32
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%other = zext i16 %meh to i32
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%first = tail call i32 (ptr, ...) @printf(ptr @.str, i32 %promoted)
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%second = tail call i32 (ptr, ...) @printf(ptr @.str, i32 %other)
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ret i32 0
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}
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declare i32 @printf(ptr, ...)
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