Strength reduction improvements.

[oota-llvm.git] / test / CodeGen / X86 / stride-nine-with-base-reg.ll

diff --git a/test/CodeGen/X86/stride-nine-with-base-reg.ll b/test/CodeGen/X86/stride-nine-with-base-reg.ll
new file mode 100644 (file)
index 0000000..f443c76
--- /dev/null
+++ b/test/CodeGen/X86/stride-nine-with-base-reg.ll
@@ -0,0 +1,34 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep lea | count 1
+; RUN: llvm-as < %s | llc -march=x86-64 | not grep lea
+
+; For x86 there's an lea above the loop. In both cases, there shouldn't
+; be any lea instructions inside the loop.
+
+@B = external global [1000 x i8], align 32
+@A = external global [1000 x i8], align 32
+@P = external global [1000 x i8], align 32
+
+define void @foo(i32 %m, i32 %p) {
+entry:
+       %tmp1 = icmp sgt i32 %m, 0
+       br i1 %tmp1, label %bb, label %return
+
+bb:
+       %i.019.0 = phi i32 [ %indvar.next, %bb ], [ 0, %entry ]
+       %tmp2 = getelementptr [1000 x i8]* @B, i32 0, i32 %i.019.0
+       %tmp3 = load i8* %tmp2, align 4
+       %tmp4 = mul i8 %tmp3, 2
+       %tmp5 = getelementptr [1000 x i8]* @A, i32 0, i32 %i.019.0
+       store i8 %tmp4, i8* %tmp5, align 4
+       %tmp8 = mul i32 %i.019.0, 9
+        %tmp0 = add i32 %tmp8, %p
+       %tmp10 = getelementptr [1000 x i8]* @P, i32 0, i32 %tmp0
+       store i8 17, i8* %tmp10, align 4
+       %indvar.next = add i32 %i.019.0, 1
+       %exitcond = icmp eq i32 %indvar.next, %m
+       br i1 %exitcond, label %return, label %bb
+
+return:
+       ret void
+}
+