[llvm-commits] [llvm] r84401 - /llvm/trunk/test/Analysis/BasicAA/modref.ll

[Chris Lattner]

Author: lattner
Date: Sat Oct 17 23:50:18 2009
New Revision: 84401

URL: http://llvm.org/viewvc/llvm-project?rev=84401&view=rev
Log:
tighten test2, add a test that it doesn't get transformed in the invalid edge case.

Modified:
    llvm/trunk/test/Analysis/BasicAA/modref.ll

Modified: llvm/trunk/test/Analysis/BasicAA/modref.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/BasicAA/modref.ll?rev=84401&r1=84400&r2=84401&view=diff

==============================================================================
--- llvm/trunk/test/Analysis/BasicAA/modref.ll (original)
+++ llvm/trunk/test/Analysis/BasicAA/modref.ll Sat Oct 17 23:50:18 2009
@@ -40,7 +40,7 @@
 
 define i8 @test2(i8* %P) {
 ; CHECK: @test2
-  %P2 = getelementptr i8* %P, i32 1000
+  %P2 = getelementptr i8* %P, i32 127
   store i8 1, i8* %P2  ;; Not dead across memset
   call void @llvm.memset.i8(i8* %P, i8 2, i8 127, i32 0)
   %A = load i8* %P2
@@ -48,6 +48,17 @@
 ; CHECK: ret i8 1
 }
 
+define i8 @test2a(i8* %P) {
+; CHECK: @test2
+  %P2 = getelementptr i8* %P, i32 126
+  store i8 1, i8* %P2  ;; Dead, clobbered by memset.
+  call void @llvm.memset.i8(i8* %P, i8 2, i8 127, i32 0)
+  %A = load i8* %P2
+  ret i8 %A
+; CHECK: %A = load i8* %P2
+; CHECK: ret i8 %A
+}
+
 define void @test3(i8* %P) {
 ; CHECK: @test3
   %P2 = getelementptr i8* %P, i32 2