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21 lines
611 B
21 lines
611 B
7 months ago
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; 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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; A 0 valued byval pointer may be valid
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define i1 @byval_may_be_zero(i32* 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 i32* [[PTR:%.*]], null
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; CHECK-NEXT: ret i1 [[CMP]]
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;
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%cmp = icmp eq i32* %ptr, null
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ret i1 %cmp
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}
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define i1 @nonnull_may_be_zero(i32* 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 i32* %ptr, null
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ret i1 %cmp
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}
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