commit a15400d05d23dd45a8ed583da857d1b02329eb40
author Craig Topper <craig.topper@sifive.com> Mon Dec 02 13:30:46 2024 -0800
committer GitHub <noreply@github.com> Mon Dec 02 13:30:46 2024 -0800
tree dd0b2534672e36ab4302b980f486a63d26743b84
parent bde79c0e27fd0fb1e31c9b8b34ae71716c51a8e8

[RISCV][GISel] Support f32/f64 ldexp. (#117941)

The existing libcall lowering in LegalizerHelper.cpp did not account
for one operand being integer. Reuse the G_FPOWI code to fix this.

llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp

diff --git a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
index dd424af..d4323cd 100644
--- a/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LegalizerHelper.cpp
@@ -1233,7 +1233,6 @@
   case TargetOpcode::G_FLOG10:
   case TargetOpcode::G_FLOG:
   case TargetOpcode::G_FLOG2:
-  case TargetOpcode::G_FLDEXP:
   case TargetOpcode::G_FEXP:
   case TargetOpcode::G_FEXP2:
   case TargetOpcode::G_FEXP10:
@@ -1279,7 +1278,8 @@
     MI.eraseFromParent();
     return Legalized;
   }
-  case TargetOpcode::G_FPOWI: {
+  case TargetOpcode::G_FPOWI:
+  case TargetOpcode::G_FLDEXP: {
     LLT LLTy = MRI.getType(MI.getOperand(0).getReg());
     unsigned Size = LLTy.getSizeInBits();
     Type *HLTy = getFloatTypeForLLT(Ctx, LLTy);