From bf82f44e7b9769c5de3cb62a984fed83016963d1 Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Thu, 4 Aug 2016 16:48:30 +0000
Subject: [PATCH] add tests for missing vector folds

llvm-svn: 277736
---
 llvm/test/Transforms/InstSimplify/compare.ll | 36 +++++++++++++++++++++++-----
 1 file changed, 30 insertions(+), 6 deletions(-)

diff --git a/llvm/test/Transforms/InstSimplify/compare.ll b/llvm/test/Transforms/InstSimplify/compare.ll
index 9d6fd74..4d30203 100644
--- a/llvm/test/Transforms/InstSimplify/compare.ll
+++ b/llvm/test/Transforms/InstSimplify/compare.ll
@@ -1005,22 +1005,46 @@ define i1 @nonnull_load_as_inner(i32 addrspace(1)** %addr) {
 
 ; If a bit is known to be zero for A and known to be one for B,
 ; then A and B cannot be equal.
-define i1 @icmp_eq_const(i32 %a) nounwind {
+define i1 @icmp_eq_const(i32 %a) {
+; CHECK-LABEL: @icmp_eq_const(
+; CHECK-NEXT:    ret i1 false
+;
   %b = mul nsw i32 %a, -2
   %c = icmp eq i32 %b, 1
   ret i1 %c
+}
 
-; CHECK-LABEL: @icmp_eq_const
-; CHECK-NEXT: ret i1 false 
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @icmp_eq_const_vec(<2 x i32> %a) {
+; CHECK-LABEL: @icmp_eq_const_vec(
+; CHECK-NEXT:    [[B:%.*]] = mul nsw <2 x i32> %a, <i32 -2, i32 -2>
+; CHECK-NEXT:    [[C:%.*]] = icmp eq <2 x i32> [[B]], <i32 1, i32 1>
+; CHECK-NEXT:    ret <2 x i1> [[C]]
+;
+  %b = mul nsw <2 x i32> %a, <i32 -2, i32 -2>
+  %c = icmp eq <2 x i32> %b, <i32 1, i32 1>
+  ret <2 x i1> %c
 }
 
-define i1 @icmp_ne_const(i32 %a) nounwind {
+define i1 @icmp_ne_const(i32 %a) {
+; CHECK-LABEL: @icmp_ne_const(
+; CHECK-NEXT:    ret i1 true
+;
   %b = mul nsw i32 %a, -2
   %c = icmp ne i32 %b, 1
   ret i1 %c
+}
 
-; CHECK-LABEL: @icmp_ne_const
-; CHECK-NEXT: ret i1 true
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @icmp_ne_const_vec(<2 x i32> %a) {
+; CHECK-LABEL: @icmp_ne_const_vec(
+; CHECK-NEXT:    [[B:%.*]] = mul nsw <2 x i32> %a, <i32 -2, i32 -2>
+; CHECK-NEXT:    [[C:%.*]] = icmp ne <2 x i32> [[B]], <i32 1, i32 1>
+; CHECK-NEXT:    ret <2 x i1> [[C]]
+;
+  %b = mul nsw <2 x i32> %a, <i32 -2, i32 -2>
+  %c = icmp ne <2 x i32> %b, <i32 1, i32 1>
+  ret <2 x i1> %c
 }
 
 define i1 @icmp_sdiv_int_min(i32 %a) {
-- 
2.7.4