commit 7fc7ef14340a3a58cebd0801497b68eb698c2784
author Serge Pavlov <sepavloff@gmail.com> Wed Jan 10 14:18:00 2024 +0700
committer GitHub <noreply@github.com> Wed Jan 10 14:18:00 2024 +0700
tree df6f973fa4f1b2652eda2b190f9219585daba2bf
parent 7388b7422f9307dd5ae3fe3876a676d83d702daf

[GlobalISel] Lowering of {get,set,reset}_fpenv (#75086)

The intrinsics get_fpenv, set_fpenv and reset_fpenv in this change are
implemented as calls to math library functions. Target specific lowering
will be implemented later on.

llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp

diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index def7f6e..21947a5 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -958,6 +958,13 @@
 getStateLibraryFunctionFor(MachineInstr &MI, const TargetLowering &TLI) {
   RTLIB::Libcall RTLibcall;
   switch (MI.getOpcode()) {
+  case TargetOpcode::G_GET_FPENV:
+    RTLibcall = RTLIB::FEGETENV;
+    break;
+  case TargetOpcode::G_SET_FPENV:
+  case TargetOpcode::G_RESET_FPENV:
+    RTLibcall = RTLIB::FESETENV;
+    break;
   case TargetOpcode::G_GET_FPMODE:
     RTLibcall = RTLIB::FEGETMODE;
     break;
@@ -1232,18 +1239,21 @@
     MI.eraseFromParent();
     return Result;
   }
+  case TargetOpcode::G_GET_FPENV:
   case TargetOpcode::G_GET_FPMODE: {
     LegalizeResult Result = createGetStateLibcall(MIRBuilder, MI, LocObserver);
     if (Result != Legalized)
       return Result;
     break;
   }
+  case TargetOpcode::G_SET_FPENV:
   case TargetOpcode::G_SET_FPMODE: {
     LegalizeResult Result = createSetStateLibcall(MIRBuilder, MI, LocObserver);
     if (Result != Legalized)
       return Result;
     break;
   }
+  case TargetOpcode::G_RESET_FPENV:
   case TargetOpcode::G_RESET_FPMODE: {
     LegalizeResult Result =
         createResetStateLibcall(MIRBuilder, MI, LocObserver);