Re-apply 56835 along with header file changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56848 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/2008-09-29-ReMatBug.ll b/test/CodeGen/X86/2008-09-29-ReMatBug.ll
index e69de29..d4da01a 100644
--- a/test/CodeGen/X86/2008-09-29-ReMatBug.ll
+++ b/test/CodeGen/X86/2008-09-29-ReMatBug.ll
@@ -0,0 +1,85 @@
+; RUN: llvm-as < %s | llc -mtriple=i386-apple-darwin -relocation-model=pic -disable-fp-elim
+
+ %struct..0objc_selector = type opaque
+ %struct.NSString = type opaque
+ %struct.XCStringList = type { i32, %struct._XCStringListNode* }
+ %struct._XCStringListNode = type { [3 x i8], [0 x i8], i8 }
+ %struct.__builtin_CFString = type { i32*, i32, i8*, i32 }
+internal constant %struct.__builtin_CFString { i32* getelementptr ([0 x i32]* @__CFConstantStringClassReference, i32 0, i32 0), i32 1992, i8* getelementptr ([3 x i8]* @"\01LC", i32 0, i32 0), i32 2 } ; <%struct.__builtin_CFString*>:0 [#uses=1]
+@__CFConstantStringClassReference = external global [0 x i32] ; <[0 x i32]*> [#uses=1]
+@"\01LC" = internal constant [3 x i8] c"NO\00" ; <[3 x i8]*> [#uses=1]
+@"\01LC1" = internal constant [1 x i8] zeroinitializer ; <[1 x i8]*> [#uses=1]
+@llvm.used1 = appending global [1 x i8*] [ i8* bitcast (%struct.NSString* (%struct.XCStringList*, %struct..0objc_selector*)* @"-[XCStringList stringRepresentation]" to i8*) ], section "llvm.metadata" ; <[1 x i8*]*> [#uses=0]
+
+define %struct.NSString* @"-[XCStringList stringRepresentation]"(%struct.XCStringList* %self, %struct..0objc_selector* %_cmd) nounwind {
+entry:
+ %0 = load i32* null, align 4 ; <i32> [#uses=1]
+ %1 = and i32 %0, 16777215 ; <i32> [#uses=1]
+ %2 = icmp eq i32 %1, 0 ; <i1> [#uses=1]
+ br i1 %2, label %bb44, label %bb4
+
+bb4: ; preds = %entry
+ %3 = load %struct._XCStringListNode** null, align 4 ; <%struct._XCStringListNode*> [#uses=2]
+ %4 = icmp eq %struct._XCStringListNode* %3, null ; <i1> [#uses=1]
+ %5 = bitcast %struct._XCStringListNode* %3 to i32* ; <i32*> [#uses=1]
+ br label %bb37.outer
+
+bb6: ; preds = %bb37
+ br label %bb19
+
+bb19: ; preds = %bb37, %bb6
+ %.rle = phi i32 [ 0, %bb6 ], [ %10, %bb37 ] ; <i32> [#uses=1]
+ %bufptr.0.lcssa = phi i8* [ null, %bb6 ], [ null, %bb37 ] ; <i8*> [#uses=2]
+ %6 = and i32 %.rle, 16777215 ; <i32> [#uses=1]
+ %7 = icmp eq i32 %6, 0 ; <i1> [#uses=1]
+ br i1 %7, label %bb25.split, label %bb37
+
+bb25.split: ; preds = %bb19
+ call void @foo(i8* getelementptr ([1 x i8]* @"\01LC1", i32 0, i32 0)) nounwind nounwind
+ br label %bb35.outer
+
+bb34: ; preds = %bb35, %bb35, %bb35, %bb35
+ %8 = getelementptr i8* %bufptr.0.lcssa, i32 %totalLength.0.ph ; <i8*> [#uses=1]
+ store i8 92, i8* %8, align 1
+ br label %bb35.outer
+
+bb35.outer: ; preds = %bb34, %bb25.split
+ %totalLength.0.ph = add i32 0, %totalLength.1.ph ; <i32> [#uses=2]
+ br label %bb35
+
+bb35: ; preds = %bb35, %bb35.outer
+ %9 = load i8* null, align 1 ; <i8> [#uses=1]
+ switch i8 %9, label %bb35 [
+ i8 0, label %bb37.outer
+ i8 32, label %bb34
+ i8 92, label %bb34
+ i8 34, label %bb34
+ i8 39, label %bb34
+ ]
+
+bb37.outer: ; preds = %bb35, %bb4
+ %totalLength.1.ph = phi i32 [ 0, %bb4 ], [ %totalLength.0.ph, %bb35 ] ; <i32> [#uses=1]
+ %bufptr.1.ph = phi i8* [ null, %bb4 ], [ %bufptr.0.lcssa, %bb35 ] ; <i8*> [#uses=2]
+ br i1 %4, label %bb39.split, label %bb37
+
+bb37: ; preds = %bb37.outer, %bb19
+ %10 = load i32* %5, align 4 ; <i32> [#uses=1]
+ br i1 false, label %bb6, label %bb19
+
+bb39.split: ; preds = %bb37.outer
+ %11 = bitcast i8* null to %struct.NSString* ; <%struct.NSString*> [#uses=2]
+ %12 = icmp eq i8* null, %bufptr.1.ph ; <i1> [#uses=1]
+ br i1 %12, label %bb44, label %bb42
+
+bb42: ; preds = %bb39.split
+ call void @quux(i8* %bufptr.1.ph) nounwind nounwind
+ ret %struct.NSString* %11
+
+bb44: ; preds = %bb39.split, %entry
+ %.0 = phi %struct.NSString* [ bitcast (%struct.__builtin_CFString* @0 to %struct.NSString*), %entry ], [ %11, %bb39.split ] ; <%struct.NSString*> [#uses=1]
+ ret %struct.NSString* %.0
+}
+
+declare void @foo(i8*)
+
+declare void @quux(i8*)