new testcase

llvm-svn: 37251

1 files changed, 37 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/X86/lsr-negative-stride.ll b/llvm/test/CodeGen/X86/lsr-negative-stride.ll
new file mode 100644
index 00000000000..5b9711e18a6
--- /dev/null
+++ b/llvm/test/CodeGen/X86/lsr-negative-stride.ll
@@ -0,0 +1,37 @@
+; RUN: llvm-as < %s | llc -march=x86 | not grep neg
+; RUN: llvm-as < %s | llc -march=x86 | not grep sub.*esp
+; RUN: llvm-as < %s | llc -march=x86 | not grep esi
+
+define i32 @t(i32 %a, i32 %b) {
+entry:
+	%tmp1434 = icmp eq i32 %a, %b		; <i1> [#uses=1]
+	br i1 %tmp1434, label %bb17, label %bb.outer
+
+bb.outer:		; preds = %cond_false, %entry
+	%b_addr.021.0.ph = phi i32 [ %b, %entry ], [ %tmp10, %cond_false ]		; <i32> [#uses=5]
+	%a_addr.026.0.ph = phi i32 [ %a, %entry ], [ %a_addr.026.0, %cond_false ]		; <i32> [#uses=1]
+	br label %bb
+
+bb:		; preds = %cond_true, %bb.outer
+	%indvar = phi i32 [ 0, %bb.outer ], [ %indvar.next, %cond_true ]		; <i32> [#uses=2]
+	%tmp. = sub i32 0, %b_addr.021.0.ph		; <i32> [#uses=1]
+	%tmp.40 = mul i32 %indvar, %tmp.		; <i32> [#uses=1]
+	%a_addr.026.0 = add i32 %tmp.40, %a_addr.026.0.ph		; <i32> [#uses=6]
+	%tmp3 = icmp sgt i32 %a_addr.026.0, %b_addr.021.0.ph		; <i1> [#uses=1]
+	br i1 %tmp3, label %cond_true, label %cond_false
+
+cond_true:		; preds = %bb
+	%tmp7 = sub i32 %a_addr.026.0, %b_addr.021.0.ph		; <i32> [#uses=2]
+	%tmp1437 = icmp eq i32 %tmp7, %b_addr.021.0.ph		; <i1> [#uses=1]
+	%indvar.next = add i32 %indvar, 1		; <i32> [#uses=1]
+	br i1 %tmp1437, label %bb17, label %bb
+
+cond_false:		; preds = %bb
+	%tmp10 = sub i32 %b_addr.021.0.ph, %a_addr.026.0		; <i32> [#uses=2]
+	%tmp14 = icmp eq i32 %a_addr.026.0, %tmp10		; <i1> [#uses=1]
+	br i1 %tmp14, label %bb17, label %bb.outer
+
+bb17:		; preds = %cond_false, %cond_true, %entry
+	%a_addr.026.1 = phi i32 [ %a, %entry ], [ %tmp7, %cond_true ], [ %a_addr.026.0, %cond_false ]		; <i32> [#uses=1]
+	ret i32 %a_addr.026.1
+}