mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-24 06:30:19 +00:00
5c78736f85
It should continue scanning until the malloc call, and this patch fixes that. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83931 91177308-0d34-0410-b5e6-96231b3b80d8
16 lines
591 B
LLVM
16 lines
591 B
LLVM
; Test to make sure malloc's bitcast does not block detection of a store
|
|
; to aliased memory; GVN should not optimize away the load in this program.
|
|
; RUN: opt < %s -gvn -S | FileCheck %s
|
|
|
|
define i64 @test() {
|
|
%1 = tail call i8* @malloc(i64 mul (i64 4, i64 ptrtoint (i64* getelementptr (i64* null, i64 1) to i64))) ; <i8*> [#uses=2]
|
|
store i8 42, i8* %1
|
|
%X = bitcast i8* %1 to i64* ; <i64*> [#uses=1]
|
|
%Y = load i64* %X ; <i64> [#uses=1]
|
|
ret i64 %Y
|
|
; CHECK: %Y = load i64* %X
|
|
; CHECK: ret i64 %Y
|
|
}
|
|
|
|
declare noalias i8* @malloc(i64)
|