Files
clang-p2996/llvm/test/Transforms/InstCombine/realloc.ll
Sanjay Patel b2ab3f28d5 [SimplifyLibcalls] Realloc(null, N) -> Malloc(N)
Patch by Dávid Bolvanský!

Differential Revision: https://reviews.llvm.org/D45413

llvm-svn: 330259
2018-04-18 14:21:31 +00:00

25 lines
695 B
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
declare i8* @realloc(i8*, i64) #1
declare noalias i8* @malloc(i64) #1
define i8* @realloc_null_ptr() #0 {
; CHECK-LABEL: @realloc_null_ptr(
; CHECK-NEXT: [[MALLOC:%.*]] = call i8* @malloc(i64 100)
; CHECK-NEXT: ret i8* [[MALLOC]]
;
%call = call i8* @realloc(i8* null, i64 100) #2
ret i8* %call
}
define i8* @realloc_unknown_ptr(i8* %ptr) #0 {
; CHECK-LABEL: @realloc_unknown_ptr(
; CHECK-NEXT: [[CALL:%.*]] = call i8* @realloc(i8* [[PTR:%.*]], i64 100)
; CHECK-NEXT: ret i8* [[CALL]]
;
%call = call i8* @realloc(i8* %ptr, i64 100) #2
ret i8* %call
}