[clang] 10b60dd - [PowerPC] Refactor ppcUserFeaturesCheck()

[Lei Huang via cfe-commits]

Author: Lei Huang
Date: 2020-04-17T15:19:46-05:00
New Revision: 10b60dde767011c250649dc6a305379034c5b5c5

URL: https://github.com/llvm/llvm-project/commit/10b60dde767011c250649dc6a305379034c5b5c5
DIFF: https://github.com/llvm/llvm-project/commit/10b60dde767011c250649dc6a305379034c5b5c5.diff

LOG: [PowerPC] Refactor ppcUserFeaturesCheck()

Summary: This function keeps growing, refactor to use lambda.

Reviewers: nemanjai, stefanp

Subscribers: kbarton, shchenz, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D78308

Added: 
    

Modified: 
    clang/lib/Basic/Targets/PPC.cpp
    clang/test/Driver/ppc-dependent-options.cpp

Removed: 
    


################################################################################
diff  --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
index 1877d4a5ef70..81c13a8104e8 100644
--- a/clang/lib/Basic/Targets/PPC.cpp
+++ b/clang/lib/Basic/Targets/PPC.cpp
@@ -228,33 +228,25 @@ void PPCTargetInfo::getTargetDefines(const LangOptions &Opts,
 static bool ppcUserFeaturesCheck(DiagnosticsEngine &Diags,
                                  const std::vector<std::string> &FeaturesVec) {
 
-  if (llvm::find(FeaturesVec, "-vsx") != FeaturesVec.end()) {
-    if (llvm::find(FeaturesVec, "+power8-vector") != FeaturesVec.end()) {
-      Diags.Report(diag::err_opt_not_valid_with_opt) << "-mpower8-vector"
-                                                     << "-mno-vsx";
-      return false;
-    }
-
-    if (llvm::find(FeaturesVec, "+direct-move") != FeaturesVec.end()) {
-      Diags.Report(diag::err_opt_not_valid_with_opt) << "-mdirect-move"
-                                                     << "-mno-vsx";
-      return false;
-    }
-
-    if (llvm::find(FeaturesVec, "+float128") != FeaturesVec.end()) {
-      Diags.Report(diag::err_opt_not_valid_with_opt) << "-mfloat128"
-                                                     << "-mno-vsx";
-      return false;
+  // vsx was not explicitly turned off.
+  if (llvm::find(FeaturesVec, "-vsx") == FeaturesVec.end())
+    return true;
+
+  auto FindVSXSubfeature = [&](StringRef Feature, StringRef Option) {
+    if (llvm::find(FeaturesVec, Feature) != FeaturesVec.end()) {
+      Diags.Report(diag::err_opt_not_valid_with_opt) << Option << "-mno-vsx";
+      return true;
     }
+    return false;
+  };
 
-    if (llvm::find(FeaturesVec, "+power9-vector") != FeaturesVec.end()) {
-      Diags.Report(diag::err_opt_not_valid_with_opt) << "-mpower9-vector"
-                                                     << "-mno-vsx";
-      return false;
-    }
-  }
+  bool Found = FindVSXSubfeature("+power8-vector", "-mpower8-vector");
+  Found |= FindVSXSubfeature("+direct-move", "-mdirect-move");
+  Found |= FindVSXSubfeature("+float128", "-mfloat128");
+  Found |= FindVSXSubfeature("+power9-vector", "-mpower9-vector");
 
-  return true;
+  // Return false if any vsx subfeatures was found.
+  return !Found;
 }
 
 bool PPCTargetInfo::initFeatureMap(

diff  --git a/clang/test/Driver/ppc-dependent-options.cpp b/clang/test/Driver/ppc-dependent-options.cpp
index 9fb812dc218f..c089422c68b9 100644
--- a/clang/test/Driver/ppc-dependent-options.cpp
+++ b/clang/test/Driver/ppc-dependent-options.cpp
@@ -54,6 +54,10 @@
 // RUN: -mcpu=power9 -std=c++11 -mno-vsx -mfloat128 %s 2>&1 | \
 // RUN: FileCheck %s -check-prefix=CHECK-NVSX-FLT128
 
+// RUN: not %clang -target powerpc64le-unknown-unknown -fsyntax-only \
+// RUN: -mcpu=power9 -std=c++11 -mno-vsx -mfloat128 -mpower9-vector %s 2>&1 | \
+// RUN: FileCheck %s -check-prefix=CHECK-NVSX-MULTI
+
 #ifdef __VSX__
 static_assert(false, "VSX enabled");
 #endif
@@ -78,5 +82,7 @@ static_assert(false, "Neither enabled");
 // CHECK-NVSX-P9V: error: option '-mpower9-vector' cannot be specified with '-mno-vsx'
 // CHECK-NVSX-FLT128: error: option '-mfloat128' cannot be specified with '-mno-vsx'
 // CHECK-NVSX-DMV: error: option '-mdirect-move' cannot be specified with '-mno-vsx'
+// CHECK-NVSX-MULTI: error: option '-mfloat128' cannot be specified with '-mno-vsx'
+// CHECK-NVSX-MULTI: error: option '-mpower9-vector' cannot be specified with '-mno-vsx'
 // CHECK-NVSX: Neither enabled
 // CHECK-VSX: VSX enabled