mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 00:12:50 +01:00
6aff5b94ff
does normal initialization and normal chaining. Change the default AliasAnalysis implementation to NoAlias. Update StandardCompileOpts.h and friends to explicitly request BasicAliasAnalysis. Update tests to explicitly request -basicaa. llvm-svn: 116720
40 lines
778 B
LLVM
40 lines
778 B
LLVM
; RUN: opt %s -basicaa -dse -S | FileCheck %s
|
|
|
|
%t = type { i32 }
|
|
|
|
@g = global i32 42
|
|
|
|
define void @test1(%t* noalias %pp) {
|
|
%p = getelementptr inbounds %t* %pp, i32 0, i32 0
|
|
|
|
store i32 1, i32* %p; <-- This is dead
|
|
%x = load i32* inttoptr (i32 12345 to i32*)
|
|
store i32 %x, i32* %p
|
|
ret void
|
|
; CHECK: define void @test1
|
|
; CHECK: store
|
|
; CHECK-NOT: store
|
|
; CHECK: ret void
|
|
}
|
|
|
|
define void @test3() {
|
|
store i32 1, i32* @g; <-- This is dead.
|
|
store i32 42, i32* @g
|
|
ret void
|
|
; CHECK: define void @test3
|
|
; CHECK: store
|
|
; CHECK-NOT: store
|
|
; CHECK: ret void
|
|
}
|
|
|
|
define void @test4(i32* %p) {
|
|
store i32 1, i32* %p
|
|
%x = load i32* @g; <-- %p and @g could alias
|
|
store i32 %x, i32* %p
|
|
ret void
|
|
; CHECK: define void @test4
|
|
; CHECK: store
|
|
; CHECK: store
|
|
; CHECK: ret void
|
|
}
|