Testcase for codegen bug.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36450 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2007-04-25-MMX-PADDQ.ll b/test/CodeGen/X86/2007-04-25-MMX-PADDQ.ll
new file mode 100644 (file)
index 0000000..32d5487
--- /dev/null
+++ b/test/CodeGen/X86/2007-04-25-MMX-PADDQ.ll
@@ -0,0 +1,25 @@
+; RUN: llvm-as < %s | llc -o - -march=x86 -mattr=+mmx | grep paddq | wc -l | grep 2 &&
+; RUN: llvm-as < %s | llc -o - -march=x86 -mattr=+mmx | grep movq | wc -l | grep 3
+
+define <1 x i64> @unsigned_add3(<1 x i64>* %a, <1 x i64>* %b, i32 %count) {
+entry:
+       %tmp2942 = icmp eq i32 %count, 0                ; <i1> [#uses=1]
+       br i1 %tmp2942, label %bb31, label %bb26
+
+bb26:          ; preds = %bb26, %entry
+       %i.037.0 = phi i32 [ 0, %entry ], [ %tmp25, %bb26 ]             ; <i32> [#uses=3]
+       %sum.035.0 = phi <1 x i64> [ zeroinitializer, %entry ], [ %tmp22, %bb26 ]               ; <<1 x i64>> [#uses=1]
+       %tmp13 = getelementptr <1 x i64>* %b, i32 %i.037.0              ; <<1 x i64>*> [#uses=1]
+       %tmp14 = load <1 x i64>* %tmp13         ; <<1 x i64>> [#uses=1]
+       %tmp18 = getelementptr <1 x i64>* %a, i32 %i.037.0              ; <<1 x i64>*> [#uses=1]
+       %tmp19 = load <1 x i64>* %tmp18         ; <<1 x i64>> [#uses=1]
+       %tmp21 = add <1 x i64> %tmp19, %tmp14           ; <<1 x i64>> [#uses=1]
+       %tmp22 = add <1 x i64> %tmp21, %sum.035.0               ; <<1 x i64>> [#uses=2]
+       %tmp25 = add i32 %i.037.0, 1            ; <i32> [#uses=2]
+       %tmp29 = icmp ult i32 %tmp25, %count            ; <i1> [#uses=1]
+       br i1 %tmp29, label %bb26, label %bb31
+
+bb31:          ; preds = %bb26, %entry
+       %sum.035.1 = phi <1 x i64> [ zeroinitializer, %entry ], [ %tmp22, %bb26 ]               ; <<1 x i64>> [#uses=1]
+       ret <1 x i64> %sum.035.1
+}