Fix LSR's IV sorting function to explicitly sort by bitwidth

[oota-llvm.git] / test / CodeGen / X86 / lsr-sort.ll

diff --git a/test/CodeGen/X86/lsr-sort.ll b/test/CodeGen/X86/lsr-sort.ll
new file mode 100644 (file)
index 0000000..00e1d69
--- /dev/null
+++ b/test/CodeGen/X86/lsr-sort.ll
@@ -0,0 +1,22 @@
+; RUN: llvm-as < %s | llc -march=x86-64 > %t
+; RUN: grep inc %t | count 1
+; RUN: not grep incw %t
+
+@X = common global i16 0               ; <i16*> [#uses=1]
+
+define void @foo(i32 %N) nounwind {
+entry:
+       %0 = icmp sgt i32 %N, 0         ; <i1> [#uses=1]
+       br i1 %0, label %bb, label %return
+
+bb:            ; preds = %bb, %entry
+       %i.03 = phi i32 [ 0, %entry ], [ %indvar.next, %bb ]            ; <i32> [#uses=2]
+       %1 = trunc i32 %i.03 to i16             ; <i16> [#uses=1]
+       volatile store i16 %1, i16* @X, align 2
+       %indvar.next = add i32 %i.03, 1         ; <i32> [#uses=2]
+       %exitcond = icmp eq i32 %indvar.next, %N                ; <i1> [#uses=1]
+       br i1 %exitcond, label %return, label %bb
+
+return:                ; preds = %bb, %entry
+       ret void
+}