From b5fb607fa3f54e791baf7ab39faf77d925dd53b7 Mon Sep 17 00:00:00 2001 From: Richard-Qin-X Date: Sat, 15 Aug 2026 19:17:55 +0800 Subject: [RISCV][GlobalISel] Widen integer-to-floating conversions to XLEN --- backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'backend/lib') diff --git a/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp b/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp index 864aca5..3f8f4cb 100644 --- a/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp +++ b/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp @@ -618,6 +618,17 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &Subtarget) : Subtar .legalFor(HasF, {{S32, S64}}) .legalFor(HasD, {{S64, S64}}) .widenScalarToNextPow2(1) + .widenScalarIf( + [HasF, HasD](const LegalizationQuery &Query) { + if (Query.Types.size() < 2 || !Query.Types[0].isCategoryNeutralScalar() || + !Query.Types[1].isCategoryNeutralScalar() || + Query.Types[1].scalarBitWidth() >= 64) { + return false; + } + return (HasF && Query.Types[0].scalarBitWidth() == 32) || + (HasD && Query.Types[0].scalarBitWidth() == 64); + }, + [S64](const LegalizationQuery &) { return std::pair{std::size_t{1}, S64}; }) .minScalar(1, S32) .libcallFor({{S32, S32}, {S64, S32}, -- cgit v1.2.3