Correctly update kill infos after extending a live range and merge 2 val#'s; fix 56165 - do not mark val# copy field if the copy does not define the val#.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56199 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 29 insertions, 0 deletions

diff --git a/test/CodeGen/ARM/2008-09-14-CoaleserBug.ll b/test/CodeGen/ARM/2008-09-14-CoaleserBug.ll
new file mode 100644
index 0000000..c601b90
--- /dev/null
+++ b/test/CodeGen/ARM/2008-09-14-CoaleserBug.ll
@@ -0,0 +1,29 @@
+; RUN: llvm-as < %s | llc -mtriple=arm-apple-darwin
+
+@"\01LC1" = external constant [288 x i8]		; <[288 x i8]*> [#uses=1]
+
+declare void @llvm.memcpy.i32(i8*, i8*, i32, i32) nounwind
+
+define i32 @main(i32 %argc, i8** %argv) nounwind {
+entry:
+	br label %bb.i
+
+bb.i:		; preds = %bb.i, %entry
+	%i.01.i = phi i32 [ 0, %entry ], [ %indvar.next52, %bb.i ]		; <i32> [#uses=1]
+	%indvar.next52 = add i32 %i.01.i, 1		; <i32> [#uses=2]
+	%exitcond53 = icmp eq i32 %indvar.next52, 15		; <i1> [#uses=1]
+	br i1 %exitcond53, label %bb.i33.loopexit, label %bb.i
+
+bb.i33.loopexit:		; preds = %bb.i
+	%0 = malloc [347 x i8]		; <[347 x i8]*> [#uses=2]
+	%.sub = getelementptr [347 x i8]* %0, i32 0, i32 0		; <i8*> [#uses=1]
+	call void @llvm.memcpy.i32( i8* %.sub, i8* getelementptr ([288 x i8]* @"\01LC1", i32 0, i32 0), i32 287, i32 1 ) nounwind
+	br label %bb.i28
+
+bb.i28:		; preds = %bb.i28, %bb.i33.loopexit
+	br i1 false, label %repeat_fasta.exit, label %bb.i28
+
+repeat_fasta.exit:		; preds = %bb.i28
+	free [347 x i8]* %0
+	unreachable
+}