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04b944e230
The only interesting test change is in @PR31262, where the following fold is now performed, while it previously was not: https://alive2.llvm.org/ce/z/a5Qmr6 llvm/test/Transforms/InstSimplify/ConstProp/gep.ll has not been updated, because there is a tradeoff between folding and inrange preservation there that we may want to discuss. Updates have been performed using: https://gist.github.com/nikic/98357b71fd67756b0f064c9517b62a34
21 lines
613 B
LLVM
21 lines
613 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -passes=instsimplify < %s | FileCheck %s
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; A 0 valued byval pointer may be valid
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define i1 @byval_may_be_zero(ptr byval(i32) %ptr) null_pointer_is_valid {
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; CHECK-LABEL: @byval_may_be_zero(
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; CHECK-NEXT: [[CMP:%.*]] = icmp eq ptr [[PTR:%.*]], null
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp eq ptr %ptr, null
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ret i1 %cmp
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}
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define i1 @nonnull_may_be_zero(ptr nonnull %ptr) null_pointer_is_valid {
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; CHECK-LABEL: @nonnull_may_be_zero(
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; CHECK-NEXT: ret i1 false
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;
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%cmp = icmp eq ptr %ptr, null
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ret i1 %cmp
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}
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