5af8bacc94
This adds more poison folding optimizations to InstSimplify. Since all binary operators propagate poison, these are fine. Also, the precondition of `select cond, undef, x` -> `x` is relaxed to allow the case when `x` is undef. Reviewed By: nikic Differential Revision: https://reviews.llvm.org/D104661
19 lines
394 B
LLVM
19 lines
394 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instsimplify -S | FileCheck %s
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define i1 @poison(float %x) {
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; CHECK-LABEL: @poison(
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; CHECK-NEXT: ret i1 poison
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;
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%v = fcmp oeq float %x, poison
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ret i1 %v
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}
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define i1 @poison2(float %x) {
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; CHECK-LABEL: @poison2(
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; CHECK-NEXT: ret i1 poison
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;
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%v = fcmp ueq float %x, poison
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ret i1 %v
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}
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