From 277698dd849080ff53e11894eebfed748e4df104 Mon Sep 17 00:00:00 2001
From: Andy Gocke <angocke@microsoft.com>
Date: Mon, 29 Nov 2021 13:23:04 -0800
Subject: [PATCH] Revert "Adding support for the X86Base.Pause intrinsic on
 Mono (#61707)"

This reverts commit 1997beecd941ec0b825a5319cda0e97f2effbf3b.
---
 src/mono/mono/mini/simd-intrinsics.c | 1 -
 src/mono/mono/mini/simd-methods.h    | 1 -
 src/tests/issues.targets             | 3 +++
 3 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/mono/mono/mini/simd-intrinsics.c b/src/mono/mono/mini/simd-intrinsics.c
index 957cfb9b6dd04d..38e40bffde0f83 100644
--- a/src/mono/mono/mini/simd-intrinsics.c
+++ b/src/mono/mono/mini/simd-intrinsics.c
@@ -2310,7 +2310,6 @@ static SimdIntrinsic bmi2_methods [] = {
 static SimdIntrinsic x86base_methods [] = {
 	{SN_BitScanForward},
 	{SN_BitScanReverse},
-	{SN_Pause, OP_XOP, INTRINS_SSE_PAUSE},
 	{SN_get_IsSupported}
 };
 
diff --git a/src/mono/mono/mini/simd-methods.h b/src/mono/mono/mini/simd-methods.h
index 1f1079694bb5f0..d223b2ba5aee87 100644
--- a/src/mono/mono/mini/simd-methods.h
+++ b/src/mono/mono/mini/simd-methods.h
@@ -256,7 +256,6 @@ METHOD(ComputeCrc32C)
 // X86Base
 METHOD(BitScanForward)
 METHOD(BitScanReverse)
-METHOD(Pause)
 // Crypto
 METHOD(FixedRotate)
 METHOD(HashUpdateChoose)
diff --git a/src/tests/issues.targets b/src/tests/issues.targets
index 45343e4c386803..3ba7703b5f1c95 100644
--- a/src/tests/issues.targets
+++ b/src/tests/issues.targets
@@ -846,6 +846,9 @@
 
     <!-- Known failures for mono runtime on *all* architectures/operating systems in *all* runtime modes -->
     <ItemGroup Condition="'$(RuntimeFlavor)' == 'mono'" >
+        <ExcludeList Include = "$(XUnitTestBinBase)/JIT/HardwareIntrinsics/X86/X86Base/Pause*/**">
+            <Issue>https://github.com/dotnet/runtime/issues/61693</Issue>
+        </ExcludeList>
         <ExcludeList Include = "$(XunitTestBinBase)/reflection/GenericAttribute/**">
             <Issue>https://github.com/dotnet/runtime/issues/56887</Issue>
         </ExcludeList>