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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.
30 lines
718 B
LLVM
30 lines
718 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -sccp -S | FileCheck %s
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@A = constant i32 10
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define i712 @test1() {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[BB:%.*]] = and i64 ptrtoint (i32* @A to i64), undef
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; CHECK-NEXT: [[C:%.*]] = icmp sge i64 [[BB]], 0
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; CHECK-NEXT: [[X:%.*]] = select i1 [[C]], i712 0, i712 1
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; CHECK-NEXT: ret i712 [[X]]
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;
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%P = getelementptr i32, i32* @A, i32 0
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%B = ptrtoint i32* %P to i64
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%BB = and i64 %B, undef
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%C = icmp sge i64 %BB, 0
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%X = select i1 %C, i712 0, i712 1
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ret i712 %X
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}
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define i712 @test2(i1 %C) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: ret i712 0
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;
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%X = select i1 %C, i712 0, i712 undef
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ret i712 %X
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}
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