Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/llvm/test/CodeGen/X86/2008-07-16-CoalescerCrash.ll

@@ -0,0 +1,34 @@
+; RUN: llc < %s -mtriple=x86_64-apple-darwin
+
+	%struct.SV = type { i8*, i64, i64 }
+@"\01LC25" = external constant [8 x i8]		; <[8 x i8]*> [#uses=1]
+
+declare void @Perl_sv_catpvf(%struct.SV*, i8*, ...) nounwind 
+
+declare fastcc i64 @Perl_utf8n_to_uvuni(i8*, i64, i64*, i64) nounwind 
+
+define fastcc i8* @Perl_pv_uni_display(%struct.SV* %dsv, i8* %spv, i64 %len, i64 %pvlim, i64 %flags) nounwind  {
+entry:
+	br i1 false, label %bb, label %bb40
+
+bb:		; preds = %entry
+	tail call fastcc i64 @Perl_utf8n_to_uvuni( i8* null, i64 13, i64* null, i64 255 ) nounwind 		; <i64>:0 [#uses=1]
+	br i1 false, label %bb6, label %bb33
+
+bb6:		; preds = %bb
+	br i1 false, label %bb30, label %bb31
+
+bb30:		; preds = %bb6
+	unreachable
+
+bb31:		; preds = %bb6
+	icmp eq i8 0, 0		; <i1>:1 [#uses=0]
+	br label %bb33
+
+bb33:		; preds = %bb31, %bb
+	tail call void (%struct.SV*, i8*, ...) @Perl_sv_catpvf( %struct.SV* %dsv, i8* getelementptr ([8 x i8], [8 x i8]* @"\01LC25", i32 0, i64 0), i64 %0 ) nounwind 
+	unreachable
+
+bb40:		; preds = %entry
+	ret i8* null
+}