Avoid splitting an interval multiple times; avoid splitting re-materializable val# (for now).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58068 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/X86/pre-split2.ll b/test/CodeGen/X86/pre-split2.ll
new file mode 100644
index 0000000..57903fd
--- /dev/null
+++ b/test/CodeGen/X86/pre-split2.ll
@@ -0,0 +1,26 @@
+; RUN: llvm-as < %s | llc -march=x86 -mattr=+sse2 -pre-alloc-split -stats |& \
+; RUN: not grep {pre-alloc-split}
+
+define i32 @t() {
+entry:
+ br label %bb6
+
+.noexc6: ; preds = %bb6
+ %0 = and i32 %2, -8 ; <i32> [#uses=1]
+ tail call void @llvm.memmove.i32(i8* %3, i8* null, i32 %0, i32 1) nounwind
+ store double %1, double* null, align 8
+ br label %bb6
+
+bb6: ; preds = %.noexc6, %entry
+ %1 = uitofp i32 0 to double ; <double> [#uses=1]
+ %2 = sub i32 0, 0 ; <i32> [#uses=1]
+ %3 = invoke i8* @_Znwm(i32 0)
+ to label %.noexc6 unwind label %lpad32 ; <i8*> [#uses=1]
+
+lpad32: ; preds = %bb6
+ unreachable
+}
+
+declare void @llvm.memmove.i32(i8*, i8*, i32, i32) nounwind
+
+declare i8* @_Znwm(i32)