[llvm] [PowerPC] Remove `UnsafeFPMath` uses (PR #151897)

[via llvm-commits]

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@@ -8861,9 +8854,7 @@ SDValue PPCTargetLowering::LowerINT_TO_FP(SDValue Op,
     //
     // However, if -enable-unsafe-fp-math is in effect, accept double
     // rounding to avoid the extra overhead.
-    if (Op.getValueType() == MVT::f32 &&
-        !Subtarget.hasFPCVT() &&
-        !DAG.getTarget().Options.UnsafeFPMath) {
+    if (Op.getValueType() == MVT::f32 && !Subtarget.hasFPCVT()) {
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paperchalice wrote:

This requires changing `sitofp/uitofp` to accept fast math flags.

https://github.com/llvm/llvm-project/pull/151897