[llvm-commits] [llvm] r66244 - in /llvm/trunk: lib/Transforms/Scalar/GVN.cpp test/Transforms/GVN/2009-03-05-dbg.ll

[Devang Patel]

Author: dpatel
Date: Thu Mar  5 20:59:27 2009
New Revision: 66244

URL: http://llvm.org/viewvc/llvm-project?rev=66244&view=rev
Log:
Skip DbgInfoIntrinsic.

Added:
    llvm/trunk/test/Transforms/GVN/2009-03-05-dbg.ll
Modified:
    llvm/trunk/lib/Transforms/Scalar/GVN.cpp

Modified: llvm/trunk/lib/Transforms/Scalar/GVN.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Transforms/Scalar/GVN.cpp?rev=66244&r1=66243&r2=66244&view=diff

==============================================================================
--- llvm/trunk/lib/Transforms/Scalar/GVN.cpp (original)
+++ llvm/trunk/lib/Transforms/Scalar/GVN.cpp Thu Mar  5 20:59:27 2009
@@ -21,7 +21,7 @@
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/Function.h"
-#include "llvm/Instructions.h"
+#include "llvm/IntrinsicInst.h"
 #include "llvm/Value.h"
 #include "llvm/ADT/DenseMap.h"
 #include "llvm/ADT/DepthFirstIterator.h"
@@ -1470,7 +1470,7 @@
       
       if (isa<AllocationInst>(CurInst) || isa<TerminatorInst>(CurInst) ||
           isa<PHINode>(CurInst) || CurInst->mayReadFromMemory() ||
-          CurInst->mayWriteToMemory())
+          CurInst->mayWriteToMemory() || isa<DbgInfoIntrinsic>(CurInst))
         continue;
       
       uint32_t valno = VN.lookup(CurInst);

Added: llvm/trunk/test/Transforms/GVN/2009-03-05-dbg.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/GVN/2009-03-05-dbg.ll?rev=66244&view=auto

==============================================================================
--- llvm/trunk/test/Transforms/GVN/2009-03-05-dbg.ll (added)
+++ llvm/trunk/test/Transforms/GVN/2009-03-05-dbg.ll Thu Mar  5 20:59:27 2009
@@ -0,0 +1,66 @@
+; RUN: llvm-as < %s | opt -gvn -disable-output
+	%llvm.dbg.compile_unit.type = type { i32, { }*, i32, i8*, i8*, i8*, i1, i1, i8*, i32 }
+ at llvm.dbg.compile_unit298 = external constant %llvm.dbg.compile_unit.type		; <%llvm.dbg.compile_unit.type*> [#uses=1]
+
+declare void @llvm.dbg.stoppoint(i32, i32, { }*) nounwind
+
+define i8* @__deregister_frame_info_bases(i8* %begin) {
+entry:
+	br i1 false, label %bb17, label %bb
+
+bb:		; preds = %entry
+	br i1 false, label %bb17, label %bb6.preheader
+
+bb6.preheader:		; preds = %bb
+	br label %bb6
+
+bb3:		; preds = %bb6
+	br i1 false, label %bb4, label %bb6
+
+bb4:		; preds = %bb3
+	br label %out
+
+bb6:		; preds = %bb3, %bb6.preheader
+	br i1 false, label %bb14.loopexit, label %bb3
+
+bb8:		; preds = %bb14
+	br i1 false, label %bb9, label %bb11
+
+bb9:		; preds = %bb8
+	br i1 false, label %bb10, label %bb13
+
+bb10:		; preds = %bb9
+	br label %out
+
+bb11:		; preds = %bb8
+	br i1 false, label %bb12, label %bb13
+
+bb12:		; preds = %bb11
+	br label %out
+
+bb13:		; preds = %bb11, %bb9
+	br label %bb14
+
+bb14.loopexit:		; preds = %bb6
+	br label %bb14
+
+bb14:		; preds = %bb14.loopexit, %bb13
+	br i1 false, label %bb15.loopexit, label %bb8
+
+out:		; preds = %bb12, %bb10, %bb4
+	tail call void @llvm.dbg.stoppoint(i32 217, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit298 to { }*))
+	br i1 false, label %bb15, label %bb16
+
+bb15.loopexit:		; preds = %bb14
+	br label %bb15
+
+bb15:		; preds = %bb15.loopexit, %out
+	tail call void @llvm.dbg.stoppoint(i32 217, i32 0, { }* bitcast (%llvm.dbg.compile_unit.type* @llvm.dbg.compile_unit298 to { }*))
+	unreachable
+
+bb16:		; preds = %out
+	ret i8* null
+
+bb17:		; preds = %bb, %entry
+	ret i8* null
+}