Update llvm to r84119.

1 files changed, 37 insertions, 0 deletions

diff --git a/test/CodeGen/Blackfin/promote-setcc.ll b/test/CodeGen/Blackfin/promote-setcc.ll
new file mode 100644
index 0000000..d344fad
--- /dev/null
+++ b/test/CodeGen/Blackfin/promote-setcc.ll
@@ -0,0 +1,37 @@
+; RUN: llc < %s -march=bfin > %t
+
+; The DAG combiner may sometimes create illegal i16 SETCC operations when run
+; after LegalizeOps. Try to tease out all the optimizations in
+; TargetLowering::SimplifySetCC.
+
+@x = external global i16
+@y = external global i16
+
+declare i16 @llvm.ctlz.i16(i16)
+
+; Case (srl (ctlz x), 5) == const
+; Note: ctlz is promoted, so this test does not catch the DAG combiner
+define i1 @srl_ctlz_const() {
+  %x = load i16* @x
+  %c = call i16 @llvm.ctlz.i16(i16 %x)
+  %s = lshr i16 %c, 4
+  %r = icmp eq i16 %s, 1
+  ret i1 %r
+}
+
+; Case (zext x) == const
+define i1 @zext_const() {
+  %x = load i16* @x
+  %r = icmp ugt i16 %x, 1
+  ret i1 %r
+}
+
+; Case (sext x) == const
+define i1 @sext_const() {
+  %x = load i16* @x
+  %y = add i16 %x, 1
+  %x2 = sext i16 %y to i32
+  %r = icmp ne i32 %x2, -1
+  ret i1 %r
+}
+