Fix PR2138. Apparently any modification to a std::multimap (including remove entries for a different key) can invalidate multimap iterators.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48371 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 48 insertions, 0 deletions

diff --git a/test/CodeGen/X86/2008-03-14-SpillerCrash.ll b/test/CodeGen/X86/2008-03-14-SpillerCrash.ll
new file mode 100644
index 0000000..544c9b5
--- /dev/null
+++ b/test/CodeGen/X86/2008-03-14-SpillerCrash.ll
@@ -0,0 +1,48 @@
+; RUN: llvm-as < %s | llc -mtriple=i386-pc-linux-gnu
+; PR2138
+
+	%struct.__locale_struct = type { [13 x %struct.locale_data*], i16*, i32*, i32*, [13 x i8*] }
+	%struct.anon = type { i8* }
+	%struct.locale_data = type { i8*, i8*, i32, i32, { void (%struct.locale_data*)*, %struct.anon }, i32, i32, i32, [0 x %struct.locale_data_value] }
+	%struct.locale_data_value = type { i32* }
+
+@wcstoll_l = alias i64 (i32*, i32**, i32, %struct.__locale_struct*)* @__wcstoll_l		; <i64 (i32*, i32**, i32, %struct.__locale_struct*)*> [#uses=0]
+
+define i64 @____wcstoll_l_internal(i32* %nptr, i32** %endptr, i32 %base, i32 %group, %struct.__locale_struct* %loc) nounwind  {
+entry:
+	%tmp27 = load i32* null, align 4		; <i32> [#uses=1]
+	%tmp83 = getelementptr i32* %nptr, i32 1		; <i32*> [#uses=1]
+	%tmp233 = add i32 0, -48		; <i32> [#uses=1]
+	br label %bb271.us
+bb271.us:		; preds = %entry
+	br label %bb374.outer
+bb311.split:		; preds = %bb305.us
+	%tmp313 = add i32 %tmp378.us, -48		; <i32> [#uses=1]
+	br i1 false, label %bb374.outer, label %bb383
+bb327.split:		; preds = %bb314.us
+	ret i64 0
+bb374.outer:		; preds = %bb311.split, %bb271.us
+	%tmp370371552.pn.in = phi i32 [ %tmp233, %bb271.us ], [ %tmp313, %bb311.split ]		; <i32> [#uses=1]
+	%tmp278279.pn = phi i64 [ 0, %bb271.us ], [ %tmp373.reg2mem.0.ph, %bb311.split ]		; <i64> [#uses=1]
+	%s.5.ph = phi i32* [ null, %bb271.us ], [ %tmp376.us, %bb311.split ]		; <i32*> [#uses=1]
+	%tmp366367550.pn = sext i32 %base to i64		; <i64> [#uses=1]
+	%tmp370371552.pn = zext i32 %tmp370371552.pn.in to i64		; <i64> [#uses=1]
+	%tmp369551.pn = mul i64 %tmp278279.pn, %tmp366367550.pn		; <i64> [#uses=1]
+	%tmp373.reg2mem.0.ph = add i64 %tmp370371552.pn, %tmp369551.pn		; <i64> [#uses=1]
+	br label %bb374.us
+bb374.us:		; preds = %bb314.us, %bb374.outer
+	%tmp376.us = getelementptr i32* %s.5.ph, i32 0		; <i32*> [#uses=3]
+	%tmp378.us = load i32* %tmp376.us, align 4		; <i32> [#uses=2]
+	%tmp302.us = icmp eq i32* %tmp376.us, %tmp83		; <i1> [#uses=1]
+	%bothcond484.us = or i1 false, %tmp302.us		; <i1> [#uses=1]
+	br i1 %bothcond484.us, label %bb383, label %bb305.us
+bb305.us:		; preds = %bb374.us
+	br i1 false, label %bb311.split, label %bb314.us
+bb314.us:		; preds = %bb305.us
+	%tmp320.us = icmp eq i32 %tmp378.us, %tmp27		; <i1> [#uses=1]
+	br i1 %tmp320.us, label %bb374.us, label %bb327.split
+bb383:		; preds = %bb374.us, %bb311.split
+	ret i64 0
+}
+
+declare i64 @__wcstoll_l(i32*, i32**, i32, %struct.__locale_struct*) nounwind