[llvm] [RISCV][GISel] Do libcall for G_FPTOSI, G_FPTOUI when no D or F support (PR #94613)

[Craig Topper via llvm-commits]

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@@ -169,7 +170,8 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &ST)
       MergeUnmergeActions.legalIf(
           all(typeIs(BigTyIdx, s64), typeIs(LitTyIdx, s32)));
     }
-    MergeUnmergeActions.widenScalarToNextPow2(LitTyIdx, XLen)
+    MergeUnmergeActions.legalIf(all(typeIs(BigTyIdx, sDoubleXLen), typeIs(LitTyIdx, sXLen)))
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topperc wrote:

How do we isel this UNMERGE?

https://github.com/llvm/llvm-project/pull/94613