From 7d98be81cc88c633cd932bcb543bc49e50cc47a9 Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Mon, 15 Aug 2016 19:58:21 +0000
Subject: [PATCH] [InstCombine] add tests for vector icmp folds

llvm-svn: 278726
---
 llvm/test/Transforms/InstCombine/exact.ll | 94 ++++++++++++++++++++++++++++++-
 1 file changed, 93 insertions(+), 1 deletion(-)

diff --git a/llvm/test/Transforms/InstCombine/exact.ll b/llvm/test/Transforms/InstCombine/exact.ll
index a1e8cb9..530d665 100644
--- a/llvm/test/Transforms/InstCombine/exact.ll
+++ b/llvm/test/Transforms/InstCombine/exact.ll
@@ -157,6 +157,16 @@ define i1 @udiv_icmp1(i64 %X) {
   ret i1 %B
 }
 
+define <2 x i1> @udiv_icmp1_vec(<2 x i64> %X) {
+; CHECK-LABEL: @udiv_icmp1_vec(
+; CHECK-NEXT:    [[B:%.*]] = icmp ugt <2 x i64> %X, <i64 4, i64 4>
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = udiv exact <2 x i64> %X, <i64 5, i64 5>
+  %B = icmp ne <2 x i64> %A, zeroinitializer
+  ret <2 x i1> %B
+}
+
 define i1 @udiv_icmp2(i64 %X) {
 ; CHECK-LABEL: @udiv_icmp2(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, 0
@@ -167,6 +177,16 @@ define i1 @udiv_icmp2(i64 %X) {
   ret i1 %B
 }
 
+define <2 x i1> @udiv_icmp2_vec(<2 x i64> %X) {
+; CHECK-LABEL: @udiv_icmp2_vec(
+; CHECK-NEXT:    [[B:%.*]] = icmp ult <2 x i64> %X, <i64 5, i64 5>
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = udiv exact <2 x i64> %X, <i64 5, i64 5>
+  %B = icmp eq <2 x i64> %A, zeroinitializer
+  ret <2 x i1> %B
+}
+
 define i1 @sdiv_icmp1(i64 %X) {
 ; CHECK-LABEL: @sdiv_icmp1(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, 0
@@ -177,6 +197,18 @@ define i1 @sdiv_icmp1(i64 %X) {
   ret i1 %B
 }
 
+; FIXME: Vectors should fold too.
+define <2 x i1> @sdiv_icmp1_vec(<2 x i64> %X) {
+; CHECK-LABEL: @sdiv_icmp1_vec(
+; CHECK-NEXT:    [[A:%.*]] = sdiv exact <2 x i64> %X, <i64 5, i64 5>
+; CHECK-NEXT:    [[B:%.*]] = icmp eq <2 x i64> [[A]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = sdiv exact <2 x i64> %X, <i64 5, i64 5>
+  %B = icmp eq <2 x i64> %A, zeroinitializer
+  ret <2 x i1> %B
+}
+
 define i1 @sdiv_icmp2(i64 %X) {
 ; CHECK-LABEL: @sdiv_icmp2(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, 5
@@ -187,6 +219,18 @@ define i1 @sdiv_icmp2(i64 %X) {
   ret i1 %B
 }
 
+; FIXME: Vectors should fold too.
+define <2 x i1> @sdiv_icmp2_vec(<2 x i64> %X) {
+; CHECK-LABEL: @sdiv_icmp2_vec(
+; CHECK-NEXT:    [[A:%.*]] = sdiv exact <2 x i64> %X, <i64 5, i64 5>
+; CHECK-NEXT:    [[B:%.*]] = icmp eq <2 x i64> [[A]], <i64 1, i64 1>
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = sdiv exact <2 x i64> %X, <i64 5, i64 5>
+  %B = icmp eq <2 x i64> %A, <i64 1, i64 1>
+  ret <2 x i1> %B
+}
+
 define i1 @sdiv_icmp3(i64 %X) {
 ; CHECK-LABEL: @sdiv_icmp3(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, -5
@@ -197,6 +241,18 @@ define i1 @sdiv_icmp3(i64 %X) {
   ret i1 %B
 }
 
+; FIXME: Vectors should fold too.
+define <2 x i1> @sdiv_icmp3_vec(<2 x i64> %X) {
+; CHECK-LABEL: @sdiv_icmp3_vec(
+; CHECK-NEXT:    [[A:%.*]] = sdiv exact <2 x i64> %X, <i64 5, i64 5>
+; CHECK-NEXT:    [[B:%.*]] = icmp eq <2 x i64> [[A]], <i64 -1, i64 -1>
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = sdiv exact <2 x i64> %X, <i64 5, i64 5>
+  %B = icmp eq <2 x i64> %A, <i64 -1, i64 -1>
+  ret <2 x i1> %B
+}
+
 define i1 @sdiv_icmp4(i64 %X) {
 ; CHECK-LABEL: @sdiv_icmp4(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, 0
@@ -207,6 +263,18 @@ define i1 @sdiv_icmp4(i64 %X) {
   ret i1 %B
 }
 
+; FIXME: Vectors should fold too.
+define <2 x i1> @sdiv_icmp4_vec(<2 x i64> %X) {
+; CHECK-LABEL: @sdiv_icmp4_vec(
+; CHECK-NEXT:    [[A:%.*]] = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
+; CHECK-NEXT:    [[B:%.*]] = icmp eq <2 x i64> [[A]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
+  %B = icmp eq <2 x i64> %A, zeroinitializer
+  ret <2 x i1> %B
+}
+
 define i1 @sdiv_icmp5(i64 %X) {
 ; CHECK-LABEL: @sdiv_icmp5(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, -5
@@ -217,13 +285,37 @@ define i1 @sdiv_icmp5(i64 %X) {
   ret i1 %B
 }
 
+; FIXME: Vectors should fold too.
+define <2 x i1> @sdiv_icmp5_vec(<2 x i64> %X) {
+; CHECK-LABEL: @sdiv_icmp5_vec(
+; CHECK-NEXT:    [[A:%.*]] = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
+; CHECK-NEXT:    [[B:%.*]] = icmp eq <2 x i64> [[A]], <i64 1, i64 1>
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
+  %B = icmp eq <2 x i64> %A, <i64 1, i64 1>
+  ret <2 x i1> %B
+}
+
 define i1 @sdiv_icmp6(i64 %X) {
 ; CHECK-LABEL: @sdiv_icmp6(
 ; CHECK-NEXT:    [[TMP1:%.*]] = icmp eq i64 %X, 5
 ; CHECK-NEXT:    ret i1 [[TMP1]]
 ;
-  %A = sdiv exact i64 %X, -5   ; X/-5 == 1 --> x == 5
+  %A = sdiv exact i64 %X, -5   ; X/-5 == -1 --> x == 5
   %B = icmp eq i64 %A, -1
   ret i1 %B
 }
 
+; FIXME: Vectors should fold too.
+define <2 x i1> @sdiv_icmp6_vec(<2 x i64> %X) {
+; CHECK-LABEL: @sdiv_icmp6_vec(
+; CHECK-NEXT:    [[A:%.*]] = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
+; CHECK-NEXT:    [[B:%.*]] = icmp eq <2 x i64> [[A]], <i64 -1, i64 -1>
+; CHECK-NEXT:    ret <2 x i1> [[B]]
+;
+  %A = sdiv exact <2 x i64> %X, <i64 -5, i64 -5>
+  %B = icmp eq <2 x i64> %A, <i64 -1, i64 -1>
+  ret <2 x i1> %B
+}
+
-- 
2.7.4