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61a834b1e0
This includes a fix for cases where things get marked as overdefined in ResolvedUndefsIn, but we later discover a constant. To avoid crashing, we consistently bail out on overdefined values in the visitors. This is similar to the previous behavior with forcedconstant. This reverts the revert commit 02b72f564c8be0b4f4337d5c4a3fcf7e8018a818.
40 lines
910 B
LLVM
40 lines
910 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -ipsccp -S | FileCheck %s
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@G = internal global i66 undef
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define void @foo() {
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; CHECK-LABEL: @foo(
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; CHECK-NEXT: [[X:%.*]] = load i66, i66* @G
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; CHECK-NEXT: store i66 [[X]], i66* @G
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; CHECK-NEXT: ret void
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;
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%X = load i66, i66* @G
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store i66 %X, i66* @G
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ret void
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}
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define i66 @bar() {
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; CHECK-LABEL: @bar(
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; CHECK-NEXT: [[V:%.*]] = load i66, i66* @G
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; CHECK-NEXT: [[C:%.*]] = icmp eq i66 [[V]], 17
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; CHECK-NEXT: br i1 [[C]], label [[T:%.*]], label [[F:%.*]]
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; CHECK: T:
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; CHECK-NEXT: store i66 17, i66* @G
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; CHECK-NEXT: ret i66 17
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; CHECK: F:
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; CHECK-NEXT: store i66 123, i66* @G
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; CHECK-NEXT: ret i66 0
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;
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%V = load i66, i66* @G
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%C = icmp eq i66 %V, 17
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br i1 %C, label %T, label %F
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T:
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store i66 17, i66* @G
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ret i66 %V
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F:
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store i66 123, i66* @G
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ret i66 0
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}
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