From 0460af33310263e367de11fef87aef6119f94571 Mon Sep 17 00:00:00 2001
From: Sanjay Patel <spatel@rotateright.com>
Date: Thu, 6 Jun 2019 20:14:06 +0000
Subject: [PATCH] [InstSimplify] add tests for fcmp with known-never-nan
 operands; NFC

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@362742 91177308-0d34-0410-b5e6-96231b3b80d8
---
 .../InstSimplify/floating-point-compare.ll    | 48 ++++++++++++++++++-
 1 file changed, 46 insertions(+), 2 deletions(-)

diff --git a/test/Transforms/InstSimplify/floating-point-compare.ll b/test/Transforms/InstSimplify/floating-point-compare.ll
index d53aba2cd63..3ca66c9a447 100644
--- a/test/Transforms/InstSimplify/floating-point-compare.ll
+++ b/test/Transforms/InstSimplify/floating-point-compare.ll
@@ -255,6 +255,28 @@ define <2 x i1> @UIToFP_is_nan_or_positive_or_zero_vec(<2 x i32> %x) {
   ret <2 x i1> %r
 }
 
+define i1 @UIToFP_is_positive_or_zero(i32 %x) {
+; CHECK-LABEL: @UIToFP_is_positive_or_zero(
+; CHECK-NEXT:    [[A:%.*]] = uitofp i32 [[X:%.*]] to float
+; CHECK-NEXT:    [[R:%.*]] = fcmp oge float [[A]], 0.000000e+00
+; CHECK-NEXT:    ret i1 [[R]]
+;
+  %a = uitofp i32 %x to float
+  %r = fcmp oge float %a, 0.000000e+00
+  ret i1 %r
+}
+
+define <2 x i1> @UIToFP_is_positive_or_zero_vec(<2 x i32> %x) {
+; CHECK-LABEL: @UIToFP_is_positive_or_zero_vec(
+; CHECK-NEXT:    [[A:%.*]] = uitofp <2 x i32> [[X:%.*]] to <2 x float>
+; CHECK-NEXT:    [[R:%.*]] = fcmp oge <2 x float> [[A]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[R]]
+;
+  %a = uitofp <2 x i32> %x to <2 x float>
+  %r = fcmp oge <2 x float> %a, zeroinitializer
+  ret <2 x i1> %r
+}
+
 define i1 @UIToFP_nnan_is_positive_or_zero(i32 %x) {
 ; CHECK-LABEL: @UIToFP_nnan_is_positive_or_zero(
 ; CHECK-NEXT:    ret i1 true
@@ -329,6 +351,28 @@ define <2 x i1> @fabs_is_nan_or_positive_or_zero_vec(<2 x double> %x) {
 
 define i1 @fabs_nnan_is_positive_or_zero(double %x) {
 ; CHECK-LABEL: @fabs_nnan_is_positive_or_zero(
+; CHECK-NEXT:    [[FABS:%.*]] = tail call nnan double @llvm.fabs.f64(double [[X:%.*]])
+; CHECK-NEXT:    [[CMP:%.*]] = fcmp oge double [[FABS]], 0.000000e+00
+; CHECK-NEXT:    ret i1 [[CMP]]
+;
+  %fabs = tail call nnan double @llvm.fabs.f64(double %x)
+  %cmp = fcmp oge double %fabs, 0.0
+  ret i1 %cmp
+}
+
+define <2 x i1> @fabs_nnan_is_positive_or_zero_vec(<2 x double> %x) {
+; CHECK-LABEL: @fabs_nnan_is_positive_or_zero_vec(
+; CHECK-NEXT:    [[FABS:%.*]] = tail call nnan <2 x double> @llvm.fabs.v2f64(<2 x double> [[X:%.*]])
+; CHECK-NEXT:    [[CMP:%.*]] = fcmp oge <2 x double> [[FABS]], zeroinitializer
+; CHECK-NEXT:    ret <2 x i1> [[CMP]]
+;
+  %fabs = tail call nnan <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
+  %cmp = fcmp oge <2 x double> %fabs, zeroinitializer
+  ret <2 x i1> %cmp
+}
+
+define i1 @fabs_fcmp-nnan_is_positive_or_zero(double %x) {
+; CHECK-LABEL: @fabs_fcmp-nnan_is_positive_or_zero(
 ; CHECK-NEXT:    ret i1 true
 ;
   %fabs = tail call double @llvm.fabs.f64(double %x)
@@ -336,8 +380,8 @@ define i1 @fabs_nnan_is_positive_or_zero(double %x) {
   ret i1 %cmp
 }
 
-define <2 x i1> @fabs_nnan_is_positive_or_zero_vec(<2 x double> %x) {
-; CHECK-LABEL: @fabs_nnan_is_positive_or_zero_vec(
+define <2 x i1> @fabs_fcmp-nnan_is_positive_or_zero_vec(<2 x double> %x) {
+; CHECK-LABEL: @fabs_fcmp-nnan_is_positive_or_zero_vec(
 ; CHECK-NEXT:    ret <2 x i1> <i1 true, i1 true>
 ;
   %fabs = tail call <2 x double> @llvm.fabs.v2f64(<2 x double> %x)
-- 
2.40.0