llvm-6502/test/Transforms/GVN/lifetime-simple.ll
Owen Anderson 9ff5a23186 Cleanup/remove some parts of the lifetime region handling code in memdep and GVN,
per Chris' comments.  Adjust testcases to match.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@90304 91177308-0d34-0410-b5e6-96231b3b80d8
2009-12-02 07:35:19 +00:00

20 lines
621 B
LLVM

; RUN: opt < %s -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 {}* @llvm.lifetime.start(i64 %S, i8* nocapture %P) readonly
declare void @llvm.lifetime.end(i64 %S, i8* nocapture %P)