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Summary: Example define dso_local noalias i8* @_Z6maixxnv() local_unnamed_addr #0 { entry: %call = tail call noalias dereferenceable_or_null(64) i8* @malloc(i64 64) #6 ret i8* %call } Reviewers: jdoerfert Reviewed By: jdoerfert Subscribers: aaron.ballman, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D66651 llvm-svn: 370168
25 lines
753 B
LLVM
25 lines
753 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -instcombine -S | FileCheck %s
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declare i8* @realloc(i8*, i64) #1
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declare noalias i8* @malloc(i64) #1
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define i8* @realloc_null_ptr() #0 {
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; CHECK-LABEL: @realloc_null_ptr(
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; CHECK-NEXT: [[MALLOC:%.*]] = call dereferenceable_or_null(100) i8* @malloc(i64 100)
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; CHECK-NEXT: ret i8* [[MALLOC]]
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;
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%call = call i8* @realloc(i8* null, i64 100) #2
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ret i8* %call
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}
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define i8* @realloc_unknown_ptr(i8* %ptr) #0 {
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; CHECK-LABEL: @realloc_unknown_ptr(
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; CHECK-NEXT: [[CALL:%.*]] = call dereferenceable_or_null(100) i8* @realloc(i8* [[PTR:%.*]], i64 100)
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; CHECK-NEXT: ret i8* [[CALL]]
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;
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%call = call i8* @realloc(i8* %ptr, i64 100) #2
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ret i8* %call
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}
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