1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-25 04:02:41 +01:00
llvm-mirror/test/Transforms/GVN/lifetime-simple.ll
Dan Gohman 6aff5b94ff Make BasicAliasAnalysis a normal AliasAnalysis implementation which
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
2010-10-18 18:04:47 +00:00

21 lines
632 B
LLVM

; RUN: opt < %s -basicaa -gvn -S | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
target triple = "i386-apple-darwin7"
define i8 @test(i8* %P) nounwind {
; CHECK: lifetime.start
; CHECK-NOT: load
; CHECK: lifetime.end
entry:
call void @llvm.lifetime.start(i64 32, i8* %P)
%0 = load i8* %P
store i8 1, i8* %P
call void @llvm.lifetime.end(i64 32, i8* %P)
%1 = load i8* %P
ret i8 %1
}
declare void @llvm.lifetime.start(i64 %S, i8* nocapture %P) readonly
declare void @llvm.lifetime.end(i64 %S, i8* nocapture %P)