[llvm-commits] [llvm] r60394 - /llvm/trunk/test/Transforms/GVN/pre.ll

[Owen Anderson]

Author: resistor
Date: Mon Dec  1 22:25:42 2008
New Revision: 60394

URL: http://llvm.org/viewvc/llvm-project?rev=60394&view=rev
Log:
Add a test for my previous PRE fix.

Added:
    llvm/trunk/test/Transforms/GVN/pre.ll

Added: llvm/trunk/test/Transforms/GVN/pre.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/GVN/pre.ll?rev=60394&view=auto

==============================================================================
--- llvm/trunk/test/Transforms/GVN/pre.ll (added)
+++ llvm/trunk/test/Transforms/GVN/pre.ll Mon Dec  1 22:25:42 2008
@@ -0,0 +1,27 @@
+; RUN: llvm-as < %s | opt -gvn -enable-pre | llvm-dis | grep {.pre}
+
+ at H = common global i32 0		; <i32*> [#uses=2]
+ at G = common global i32 0		; <i32*> [#uses=1]
+
+define i32 @test() nounwind {
+entry:
+	%0 = load i32* @H, align 4		; <i32> [#uses=2]
+	%1 = call i32 (...)* @foo() nounwind		; <i32> [#uses=1]
+	%2 = icmp ne i32 %1, 0		; <i1> [#uses=1]
+	br i1 %2, label %bb, label %bb1
+
+bb:		; preds = %entry
+	%3 = add i32 %0, 42		; <i32> [#uses=1]
+	store i32 %3, i32* @G, align 4
+	br label %bb1
+
+bb1:		; preds = %bb, %entry
+	%4 = add i32 %0, 42		; <i32> [#uses=1]
+	store i32 %4, i32* @H, align 4
+	br label %return
+
+return:		; preds = %bb1
+	ret i32 0
+}
+
+declare i32 @foo(...)