New test case.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@42963 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2007-10-14-CoalescerCrash.ll b/test/CodeGen/X86/2007-10-14-CoalescerCrash.ll
new file mode 100644 (file)
index 0000000..d29ac83
--- /dev/null
+++ b/test/CodeGen/X86/2007-10-14-CoalescerCrash.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | llc -mtriple=x86_64-apple-darwin | \
+
+        %struct._Unwind_Context = type {  }
+
+define i32 @execute_stack_op(i8* %op_ptr, i8* %op_end, %struct._Unwind_Context* %context, i64 %initial) {
+entry:
+        br i1 false, label %bb, label %return
+
+bb:             ; preds = %bb31, %entry
+        br i1 false, label %bb6, label %bb31
+
+bb6:            ; preds = %bb
+        %tmp10 = load i64* null, align 8                ; <i64> [#uses=1]
+        %tmp16 = load i64* null, align 8                ; <i64> [#uses=1]
+        br i1 false, label %bb23, label %bb31
+
+bb23:           ; preds = %bb6
+        %tmp2526.cast = and i64 %tmp16, 4294967295              ; <i64> [#uses=1]
+        %tmp27 = ashr i64 %tmp10, %tmp2526.cast         ; <i64> [#uses=1]
+        br label %bb31
+
+bb31:           ; preds = %bb23, %bb6, %bb
+        %result.0 = phi i64 [ %tmp27, %bb23 ], [ 0, %bb ], [ 0, %bb6 ]          ; <i64> [#uses=0]
+        br i1 false, label %bb, label %return
+
+return:         ; preds = %bb31, %entry
+        ret i32 undef
+}