[llvm] ebe5f17 - [X86] Remove the DeprecatedMPX feature flag.

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2020-07-22T17:44:07-07:00
New Revision: ebe5f17f9c396f14742a7c747951b65eaada158e

URL: https://github.com/llvm/llvm-project/commit/ebe5f17f9c396f14742a7c747951b65eaada158e
DIFF: https://github.com/llvm/llvm-project/commit/ebe5f17f9c396f14742a7c747951b65eaada158e.diff

LOG: [X86] Remove the DeprecatedMPX feature flag.

We deprecated mpx feature in 10.0. I left this feature flag
in case someone still had IR files containing the feature
in a target-feature attribute. At the time I think I thought it
would fail the test if the feature couldn't be found. Further
review suggests that at worst it prints a message to
stderr about ignoring the feature.

Added: 
    

Modified: 
    llvm/lib/Target/X86/X86.td
    llvm/lib/Target/X86/X86Subtarget.h

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/X86/X86.td b/llvm/lib/Target/X86/X86.td
index d3225146d5bc..70954cbfbea8 100644
--- a/llvm/lib/Target/X86/X86.td
+++ b/llvm/lib/Target/X86/X86.td
@@ -244,11 +244,6 @@ def FeatureCLDEMOTE  : SubtargetFeature<"cldemote", "HasCLDEMOTE", "true",
                                       "Enable Cache Demote">;
 def FeaturePTWRITE  : SubtargetFeature<"ptwrite", "HasPTWRITE", "true",
                                       "Support ptwrite instruction">;
-// FIXME: This feature is deprecated in 10.0 and should not be used for
-// anything, but removing it would break IR files that may contain it in a
-// target-feature attribute.
-def FeatureDeprecatedMPX : SubtargetFeature<"mpx", "DeprecatedHasMPX", "false",
-                                      "Deprecated. Support MPX instructions">;
 def FeatureAMXTILE     : SubtargetFeature<"amx-tile", "HasAMXTILE", "true",
                                       "Support AMX-TILE instructions">;
 def FeatureAMXINT8     : SubtargetFeature<"amx-int8", "HasAMXINT8", "true",

diff  --git a/llvm/lib/Target/X86/X86Subtarget.h b/llvm/lib/Target/X86/X86Subtarget.h
index 0479e94825b0..b48f5f474bcf 100644
--- a/llvm/lib/Target/X86/X86Subtarget.h
+++ b/llvm/lib/Target/X86/X86Subtarget.h
@@ -366,9 +366,6 @@ class X86Subtarget final : public X86GenSubtargetInfo {
   /// Processor has AVX-512 vp2intersect instructions
   bool HasVP2INTERSECT = false;
 
-  /// Deprecated flag for MPX instructions.
-  bool DeprecatedHasMPX = false;
-
   /// Processor supports CET SHSTK - Control-Flow Enforcement Technology
   /// using Shadow Stack
   bool HasSHSTK = false;