commit c355bec749e94c601a42e435f6c98b956f3965ac
author Melanie Blower <melanie.blower@intel.com> Mon May 04 10:48:12 2020 -0700
committer Melanie Blower <melanie.blower@intel.com> Wed May 06 08:05:44 2020 -0700
tree bfec32a6ed34d5349ec440380d2af5bcd923428f
parent f5f83cf4df3e75d8b88214928af19b64849c432a

Add support for #pragma clang fp reassociate(on|off)

Reviewers: rjmccall, erichkeane, sepavloff

Differential Revision: https://reviews.llvm.org/D78827

clang/lib/Sema/SemaAttr.cpp

diff --git a/clang/lib/Sema/SemaAttr.cpp b/clang/lib/Sema/SemaAttr.cpp
index 518ac0f..50089de 100644
--- a/clang/lib/Sema/SemaAttr.cpp
+++ b/clang/lib/Sema/SemaAttr.cpp
@@ -985,20 +985,24 @@
   }
 }
 
-void Sema::ActOnPragmaFPContract(LangOptions::FPContractModeKind FPC) {
+void Sema::ActOnPragmaFPContract(LangOptions::FPModeKind FPC) {
   switch (FPC) {
-  case LangOptions::FPC_On:
+  case LangOptions::FPM_On:
     CurFPFeatures.setAllowFPContractWithinStatement();
     break;
-  case LangOptions::FPC_Fast:
+  case LangOptions::FPM_Fast:
     CurFPFeatures.setAllowFPContractAcrossStatement();
     break;
-  case LangOptions::FPC_Off:
+  case LangOptions::FPM_Off:
     CurFPFeatures.setDisallowFPContract();
     break;
   }
 }
 
+void Sema::ActOnPragmaFPReassociate(bool IsEnabled) {
+  CurFPFeatures.setAllowAssociativeMath(IsEnabled);
+}
+
 void Sema::setRoundingMode(llvm::RoundingMode FPR) {
   CurFPFeatures.setRoundingMode(FPR);
 }
@@ -1007,10 +1011,8 @@
   CurFPFeatures.setExceptionMode(FPE);
 }
 
-void Sema::ActOnPragmaFEnvAccess(SourceLocation Loc,
-                                 LangOptions::FEnvAccessModeKind FPC) {
-  switch (FPC) {
-  case LangOptions::FEA_On:
+void Sema::ActOnPragmaFEnvAccess(SourceLocation Loc, bool IsEnabled) {
+  if (IsEnabled) {
     // Verify Microsoft restriction:
     // You can't enable fenv_access unless precise semantics are enabled.
     // Precise semantics can be enabled either by the float_control
@@ -1018,11 +1020,8 @@
     if (!isPreciseFPEnabled())
       Diag(Loc, diag::err_pragma_fenv_requires_precise);
     CurFPFeatures.setAllowFEnvAccess();
-    break;
-  case LangOptions::FEA_Off:
+  } else
     CurFPFeatures.setDisallowFEnvAccess();
-    break;
-  }
 }
 
 void Sema::PushNamespaceVisibilityAttr(const VisibilityAttr *Attr,