[llvm-commits] [llvm] r53239 - /llvm/trunk/test/Transforms/InstCombine/2008-07-08-VolatileLoadMerge.ll

[Chris Lattner]

Author: lattner
Date: Tue Jul  8 12:18:05 2008
New Revision: 53239

URL: http://llvm.org/viewvc/llvm-project?rev=53239&view=rev
Log:
new testcase for PR2496

Added:
    llvm/trunk/test/Transforms/InstCombine/2008-07-08-VolatileLoadMerge.ll

Added: llvm/trunk/test/Transforms/InstCombine/2008-07-08-VolatileLoadMerge.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/InstCombine/2008-07-08-VolatileLoadMerge.ll?rev=53239&view=auto

==============================================================================
--- llvm/trunk/test/Transforms/InstCombine/2008-07-08-VolatileLoadMerge.ll (added)
+++ llvm/trunk/test/Transforms/InstCombine/2008-07-08-VolatileLoadMerge.ll Tue Jul  8 12:18:05 2008
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {volatile load} | count 2
+; PR2496
+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-darwin8"
+ at g_1 = internal global i32 0		; <i32*> [#uses=3]
+
+define i32 @main() nounwind  {
+entry:
+	%tmp93 = icmp slt i32 0, 10		; <i1> [#uses=0]
+	%tmp34 = volatile load i32* @g_1, align 4		; <i32> [#uses=1]
+	br label %bb
+
+bb:		; preds = %bb, %entry
+	%b.0.reg2mem.0 = phi i32 [ 0, %entry ], [ %tmp6, %bb ]		; <i32> [#uses=1]
+	%tmp3.reg2mem.0 = phi i32 [ %tmp3, %bb ], [ %tmp34, %entry ]
+	%tmp4 = add i32 %tmp3.reg2mem.0, 5		; <i32> [#uses=1]
+	volatile store i32 %tmp4, i32* @g_1, align 4
+	%tmp6 = add i32 %b.0.reg2mem.0, 1		; <i32> [#uses=2]
+	%tmp9 = icmp slt i32 %tmp6, 10		; <i1> [#uses=1]
+	%tmp3 = volatile load i32* @g_1, align 4		; <i32> [#uses=1]
+	br i1 %tmp9, label %bb, label %bb11
+
+bb11:		; preds = %bb
+	ret i32 0
+}
+