From 377d2604e1ddff695cbabc50703ea34ac5df8dea Mon Sep 17 00:00:00 2001
From: eopXD <yueh.ting.chen@gmail.com>
Date: Sat, 14 Jan 2023 08:06:19 -0800
Subject: [PATCH] [11/15][Clang][RISCV][NFC] Remove Policy::PolicyType::Omit

The attribute can be removed now as preceding patches have removed its
users.

This is the 11th commit of a patch-set that aims to change the default policy
for RVV intrinsics from TAMU to TAMA.

Please refer to the cover letter in the 1st commit (D141573) for an
overview.

Reviewed By: craig.topper, kito-cheng

Differential Revision: https://reviews.llvm.org/D141768
---
 clang/include/clang/Support/RISCVVIntrinsicUtils.h |  4 +-
 clang/lib/Support/RISCVVIntrinsicUtils.cpp         | 57 ++++++++++++----------
 2 files changed, 34 insertions(+), 27 deletions(-)

diff --git a/clang/include/clang/Support/RISCVVIntrinsicUtils.h b/clang/include/clang/Support/RISCVVIntrinsicUtils.h
index e1571d7..e3dd4d2 100644
--- a/clang/include/clang/Support/RISCVVIntrinsicUtils.h
+++ b/clang/include/clang/Support/RISCVVIntrinsicUtils.h
@@ -97,7 +97,6 @@ struct Policy {
   enum PolicyType {
     Undisturbed,
     Agnostic,
-    Omit, // No policy required.
   };
   PolicyType TailPolicy = Agnostic;
   PolicyType MaskPolicy = Undisturbed;
@@ -105,6 +104,9 @@ struct Policy {
   Policy(bool HasTailPolicy, bool HasMaskPolicy)
       : IsUnspecified(true), HasTailPolicy(HasTailPolicy),
         HasMaskPolicy(HasMaskPolicy) {}
+  Policy(PolicyType TailPolicy, bool HasTailPolicy, bool HasMaskPolicy)
+      : TailPolicy(TailPolicy), HasTailPolicy(HasTailPolicy),
+        HasMaskPolicy(HasMaskPolicy) {}
   Policy(PolicyType TailPolicy, PolicyType MaskPolicy, bool HasTailPolicy,
          bool HasMaskPolicy)
       : TailPolicy(TailPolicy), MaskPolicy(MaskPolicy),
diff --git a/clang/lib/Support/RISCVVIntrinsicUtils.cpp b/clang/lib/Support/RISCVVIntrinsicUtils.cpp
index e93c553..2ad037b 100644
--- a/clang/lib/Support/RISCVVIntrinsicUtils.cpp
+++ b/clang/lib/Support/RISCVVIntrinsicUtils.cpp
@@ -969,10 +969,10 @@ llvm::SmallVector<PrototypeDescriptor> RVVIntrinsic::computeBuiltinTypes(
 llvm::SmallVector<Policy>
 RVVIntrinsic::getSupportedUnMaskedPolicies(bool HasTailPolicy,
                                            bool HasMaskPolicy) {
-  return {Policy(Policy::PolicyType::Undisturbed, Policy::PolicyType::Omit,
-                 HasTailPolicy, HasMaskPolicy), // TU
-          Policy(Policy::PolicyType::Agnostic, Policy::PolicyType::Omit,
-                 HasTailPolicy, HasMaskPolicy)}; // TA
+  return {
+      Policy(Policy::PolicyType::Undisturbed, HasTailPolicy,
+             HasMaskPolicy),                                               // TU
+      Policy(Policy::PolicyType::Agnostic, HasTailPolicy, HasMaskPolicy)}; // TA
 }
 
 llvm::SmallVector<Policy>
@@ -1034,28 +1034,33 @@ void RVVIntrinsic::updateNamesAndPolicy(bool IsMasked, bool HasPolicy,
         BuiltinName += "_ta";
     }
   } else {
-    if (PolicyAttrs.isTUMAPolicy() && !PolicyAttrs.hasMaskPolicy())
-      appendPolicySuffix("_tum");
-    else if (PolicyAttrs.isTAMAPolicy() && !PolicyAttrs.hasMaskPolicy())
-      appendPolicySuffix("_tam");
-    else if (PolicyAttrs.isMUPolicy() && !PolicyAttrs.hasTailPolicy())
-      appendPolicySuffix("_mu");
-    else if (PolicyAttrs.isMAPolicy() && !PolicyAttrs.hasTailPolicy())
-      appendPolicySuffix("_ma");
-    else if (PolicyAttrs.isTUMUPolicy())
-      appendPolicySuffix("_tumu");
-    else if (PolicyAttrs.isTAMUPolicy())
-      appendPolicySuffix("_tamu");
-    else if (PolicyAttrs.isTUMAPolicy())
-      appendPolicySuffix("_tuma");
-    else if (PolicyAttrs.isTAMAPolicy())
-      appendPolicySuffix("_tama");
-    else if (PolicyAttrs.isTUPolicy() && !IsMasked)
-      appendPolicySuffix("_tu");
-    else if (PolicyAttrs.isTAPolicy() && !IsMasked)
-      appendPolicySuffix("_ta");
-    else
-      llvm_unreachable("Unhandled policy condition");
+    if (IsMasked) {
+      if (PolicyAttrs.isTUMAPolicy() && !PolicyAttrs.hasMaskPolicy())
+        appendPolicySuffix("_tum");
+      else if (PolicyAttrs.isTAMAPolicy() && !PolicyAttrs.hasMaskPolicy())
+        appendPolicySuffix("_tam");
+      else if (PolicyAttrs.isMUPolicy() && !PolicyAttrs.hasTailPolicy())
+        appendPolicySuffix("_mu");
+      else if (PolicyAttrs.isMAPolicy() && !PolicyAttrs.hasTailPolicy())
+        appendPolicySuffix("_ma");
+      else if (PolicyAttrs.isTUMUPolicy())
+        appendPolicySuffix("_tumu");
+      else if (PolicyAttrs.isTAMUPolicy())
+        appendPolicySuffix("_tamu");
+      else if (PolicyAttrs.isTUMAPolicy())
+        appendPolicySuffix("_tuma");
+      else if (PolicyAttrs.isTAMAPolicy())
+        appendPolicySuffix("_tama");
+      else
+        llvm_unreachable("Unhandled policy condition");
+    } else {
+      if (PolicyAttrs.isTUPolicy())
+        appendPolicySuffix("_tu");
+      else if (PolicyAttrs.isTAPolicy())
+        appendPolicySuffix("_ta");
+      else
+        llvm_unreachable("Unhandled policy condition");
+    }
   }
 }
 
-- 
2.7.4