1eda5453f2
- When emitting libcalls, do not only pass the calling convention from the function prototype but also the attributes. - Do not pass attributes from e.g. libc memcpy to llvm.memcpy. Review: Reid Kleckner, Eli Friedman, Arthur Eubanks Differential Revision: https://reviews.llvm.org/D103992
25 lines
795 B
LLVM
25 lines
795 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 noalias noundef dereferenceable_or_null(100) i8* @malloc(i64 noundef 100) #[[ATTR0:[0-9]+]]
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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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