From 7e57b0027477a424236466982909904f5832dc0c Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Sun, 14 Aug 2016 22:44:10 +0000
Subject: [PATCH] [InstCombine] add tests for vector icmp folds

llvm-svn: 278637
---
 llvm/test/Transforms/InstCombine/and-compare.ll | 42 +++++++++++++++++++++++--
 1 file changed, 40 insertions(+), 2 deletions(-)

diff --git a/llvm/test/Transforms/InstCombine/and-compare.ll b/llvm/test/Transforms/InstCombine/and-compare.ll
index 074f165..ce6894f 100644
--- a/llvm/test/Transforms/InstCombine/and-compare.ll
+++ b/llvm/test/Transforms/InstCombine/and-compare.ll
@@ -18,7 +18,20 @@ define i1 @test1(i32 %a, i32 %b) {
   ret i1 %tmp
 }
 
-define zeroext i1 @test2(i64 %A) {
+define <2 x i1> @test1vec(<2 x i32> %a, <2 x i32> %b) {
+; CHECK-LABEL: @test1vec(
+; CHECK-NEXT:    [[TMP1:%.*]] = xor <2 x i32> %a, %b
+; CHECK-NEXT:    [[TMP2:%.*]] = and <2 x i32> [[TMP1]], <i32 65280, i32 65280>
+; CHECK-NEXT:    [[TMP:%.*]] = icmp ne <2 x i32> [[TMP2]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[TMP]]
+;
+  %tmp1 = and <2 x i32> %a, <i32 65280, i32 65280>
+  %tmp3 = and <2 x i32> %b, <i32 65280, i32 65280>
+  %tmp = icmp ne <2 x i32> %tmp1, %tmp3
+  ret <2 x i1> %tmp
+}
+
+define i1 @test2(i64 %A) {
 ; CHECK-LABEL: @test2(
 ; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 %A to i8
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt i8 [[TMP1]], -1
@@ -29,7 +42,19 @@ define zeroext i1 @test2(i64 %A) {
   ret i1 %cmp
 }
 
-define zeroext i1 @test3(i64 %A) {
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test2vec(<2 x i64> %A) {
+; CHECK-LABEL: @test2vec(
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i64> %A, <i64 128, i64 128>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i64> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %and = and <2 x i64> %A, <i64 128, i64 128>
+  %cmp = icmp eq <2 x i64> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
+define i1 @test3(i64 %A) {
 ; CHECK-LABEL: @test3(
 ; CHECK-NEXT:    [[TMP1:%.*]] = trunc i64 %A to i8
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i8 [[TMP1]], 0
@@ -39,3 +64,16 @@ define zeroext i1 @test3(i64 %A) {
   %cmp = icmp ne i64 %and, 0
   ret i1 %cmp
 }
+
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test3vec(<2 x i64> %A) {
+; CHECK-LABEL: @test3vec(
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i64> %A, <i64 128, i64 128>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i64> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %and = and <2 x i64> %A, <i64 128, i64 128>
+  %cmp = icmp ne <2 x i64> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
-- 
2.7.4