Fix a coalescer bug wrt how dead copy interval is shortened.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47966 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/PowerPC/2008-03-05-RegScavengerAssert.ll b/test/CodeGen/PowerPC/2008-03-05-RegScavengerAssert.ll
new file mode 100644
index 0000000..4f27b84
--- /dev/null
+++ b/test/CodeGen/PowerPC/2008-03-05-RegScavengerAssert.ll
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | llc -mtriple=powerpc-apple-darwin -enable-ppc-regscavenger
+
+declare i8* @bar(i32)
+
+define void @foo(i8* %pp) nounwind {
+entry:
+ %tmp2 = tail call i8* @bar( i32 14 ) nounwind ; <i8*> [#uses=0]
+ %tmp28 = bitcast i8* %pp to void ()** ; <void ()**> [#uses=1]
+ %tmp38 = load void ()** %tmp28, align 4 ; <void ()*> [#uses=2]
+ br i1 false, label %bb34, label %bb25
+bb25: ; preds = %entry
+ %tmp30 = bitcast void ()* %tmp38 to void (i8*)* ; <void (i8*)*> [#uses=1]
+ tail call void %tmp30( i8* null ) nounwind
+ ret void
+bb34: ; preds = %entry
+ tail call void %tmp38( ) nounwind
+ ret void
+}