From 739424ab28b547f4524b1e42fb59aa3c3528e69b Mon Sep 17 00:00:00 2001
From: Philip Reames <listmail@philipreames.com>
Date: Fri, 1 Mar 2019 18:24:05 +0000
Subject: [PATCH] [Tests] More missing atomicrmw combines

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@355215 91177308-0d34-0410-b5e6-96231b3b80d8
---
 test/Transforms/InstCombine/atomicrmw.ll | 25 ++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/test/Transforms/InstCombine/atomicrmw.ll b/test/Transforms/InstCombine/atomicrmw.ll
index 0e6c2bb7b45..e43d4a02c2b 100644
--- a/test/Transforms/InstCombine/atomicrmw.ll
+++ b/test/Transforms/InstCombine/atomicrmw.ll
@@ -229,6 +229,14 @@ define double @sat_fsub_nan(double* %addr) {
   ret double %res
 }
 
+; CHECK-LABEL: sat_fsub_nan_unused
+; CHECK-NEXT: atomicrmw fsub double* %addr, double 0x7FF00000FFFFFFFF monotonic
+; CHECK-NEXT: ret void
+define void @sat_fsub_nan_unused(double* %addr) {
+  atomicrmw fsub double* %addr, double 0x7FF00000FFFFFFFF monotonic
+  ret void
+}
+
 ; CHECK-LABEL: xchg_unused_monotonic
 ; CHECK-NEXT: store atomic i32 0, i32* %addr monotonic, align 4
 ; CHECK-NEXT: ret void
@@ -270,4 +278,21 @@ define void @sat_or_allones_unused(i32* %addr) {
 }
 
 
+; CHECK-LABEL: undef_operand_unused
+; CHECK-NEXT: atomicrmw or i32* %addr, i32 undef monotonic
+; CHECK-NEXT: ret void
+define void @undef_operand_unused(i32* %addr) {
+  atomicrmw or i32* %addr, i32 undef monotonic
+  ret void
+}
+
+; CHECK-LABEL: undef_operand_used
+; CHECK-NEXT: %res = atomicrmw or i32* %addr, i32 undef monotonic
+; CHECK-NEXT: ret i32 %res
+define i32 @undef_operand_used(i32* %addr) {
+  %res = atomicrmw or i32* %addr, i32 undef monotonic
+  ret i32 %res
+}
+
+
 
-- 
2.50.1