From e29430634a726f1a85f83580cf172ec0799f32cf Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Wed, 14 Sep 2016 23:15:11 +0000
Subject: [PATCH] [InstCombine] add vector tests for foldICmpUsingKnownBits()

llvm-svn: 281559
---
 test/Transforms/InstCombine/icmp.ll | 100 +++++++++++++++++++++++++++-
 1 file changed, 97 insertions(+), 3 deletions(-)

diff --git a/test/Transforms/InstCombine/icmp.ll b/test/Transforms/InstCombine/icmp.ll
index f9091a008b1..8a5b97c433c 100644
--- a/test/Transforms/InstCombine/icmp.ll
+++ b/test/Transforms/InstCombine/icmp.ll
@@ -171,6 +171,20 @@ define i1 @test17(i32 %x) {
   ret i1 %cmp
 }
 
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test17vec(<2 x i32> %x) {
+; CHECK-LABEL: @test17vec(
+; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i32> <i32 1, i32 1>, %x
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i32> [[SHL]], <i32 8, i32 8>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %shl = shl <2 x i32> <i32 1, i32 1>, %x
+  %and = and <2 x i32> %shl, <i32 8, i32 8>
+  %cmp = icmp eq <2 x i32> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
 define i1 @test17a(i32 %x) {
 ; CHECK-LABEL: @test17a(
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp ugt i32 %x, 2
@@ -182,8 +196,22 @@ define i1 @test17a(i32 %x) {
   ret i1 %cmp
 }
 
-define i1 @test18(i32 %x) {
-; CHECK-LABEL: @test18(
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test17a_vec(<2 x i32> %x) {
+; CHECK-LABEL: @test17a_vec(
+; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i32> <i32 1, i32 1>, %x
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i32> [[SHL]], <i32 7, i32 7>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %shl = shl <2 x i32> <i32 1, i32 1>, %x
+  %and = and <2 x i32> %shl, <i32 7, i32 7>
+  %cmp = icmp eq <2 x i32> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
+define i1 @test18_eq(i32 %x) {
+; CHECK-LABEL: @test18_eq(
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 %x, 3
 ; CHECK-NEXT:    ret i1 [[CMP]]
 ;
@@ -193,6 +221,45 @@ define i1 @test18(i32 %x) {
   ret i1 %cmp
 }
 
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test18_eq_vec(<2 x i32> %x) {
+; CHECK-LABEL: @test18_eq_vec(
+; CHECK-NEXT:    [[SH:%.*]] = lshr <2 x i32> <i32 8, i32 8>, %x
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i32> [[SH]], <i32 1, i32 1>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq <2 x i32> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %sh = lshr <2 x i32> <i32 8, i32 8>, %x
+  %and = and <2 x i32> %sh, <i32 1, i32 1>
+  %cmp = icmp eq <2 x i32> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
+define i1 @test18_ne(i32 %x) {
+; CHECK-LABEL: @test18_ne(
+; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 %x, 3
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %sh = lshr i32 8, %x
+  %and = and i32 %sh, 1
+  %cmp = icmp ne i32 %and, 0
+  ret i1 %cmp
+}
+
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test18_ne_vec(<2 x i32> %x) {
+; CHECK-LABEL: @test18_ne_vec(
+; CHECK-NEXT:    [[SH:%.*]] = lshr <2 x i32> <i32 8, i32 8>, %x
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i32> [[SH]], <i32 1, i32 1>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %sh = lshr <2 x i32> <i32 8, i32 8>, %x
+  %and = and <2 x i32> %sh, <i32 1, i32 1>
+  %cmp = icmp ne <2 x i32> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
 define i1 @test19(i32 %x) {
 ; CHECK-LABEL: @test19(
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 %x, 3
@@ -205,7 +272,6 @@ define i1 @test19(i32 %x) {
 }
 
 ; FIXME: Vectors should fold the same way.
-
 define <2 x i1> @test19vec(<2 x i32> %x) {
 ; CHECK-LABEL: @test19vec(
 ; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i32> <i32 1, i32 1>, %x
@@ -240,6 +306,20 @@ define i1 @test20(i32 %x) {
   ret i1 %cmp
 }
 
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test20vec(<2 x i32> %x) {
+; CHECK-LABEL: @test20vec(
+; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i32> <i32 1, i32 1>, %x
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i32> [[SHL]], <i32 8, i32 8>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %shl = shl <2 x i32> <i32 1, i32 1>, %x
+  %and = and <2 x i32> %shl, <i32 8, i32 8>
+  %cmp = icmp ne <2 x i32> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
 define i1 @test20a(i32 %x) {
 ; CHECK-LABEL: @test20a(
 ; CHECK-NEXT:    [[CMP:%.*]] = icmp ult i32 %x, 3
@@ -251,6 +331,20 @@ define i1 @test20a(i32 %x) {
   ret i1 %cmp
 }
 
+; FIXME: Vectors should fold the same way.
+define <2 x i1> @test20a_vec(<2 x i32> %x) {
+; CHECK-LABEL: @test20a_vec(
+; CHECK-NEXT:    [[SHL:%.*]] = shl <2 x i32> <i32 1, i32 1>, %x
+; CHECK-NEXT:    [[AND:%.*]] = and <2 x i32> [[SHL]], <i32 7, i32 7>
+; CHECK-NEXT:    [[CMP:%.*]] = icmp ne <2 x i32> [[AND]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %shl = shl <2 x i32> <i32 1, i32 1>, %x
+  %and = and <2 x i32> %shl, <i32 7, i32 7>
+  %cmp = icmp ne <2 x i32> %and, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
 define i1 @test21(i8 %x, i8 %y) {
 ; CHECK-LABEL: @test21(
 ; CHECK-NEXT:    [[B:%.*]] = icmp ugt i8 %x, 3