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| author | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-15 03:55:37 +0800 |
|---|---|---|
| committer | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-15 03:55:37 +0800 |
| commit | 6a53b7f8c3ce90791e3988b6cb9c4a9808e8d984 (patch) | |
| tree | ac3b291efcc7493ece52e2904ff629147d174c99 /backend/lib/Target/RISCV | |
| parent | fa1214d24c8882b4314729e21c5485d889ca0e35 (diff) | |
| download | rcc-project-6a53b7f8c3ce90791e3988b6cb9c4a9808e8d984.tar.gz rcc-project-6a53b7f8c3ce90791e3988b6cb9c4a9808e8d984.tar.xz | |
[GlobalISel] Lower byte-swap operations
Diffstat (limited to 'backend/lib/Target/RISCV')
| -rw-r--r-- | backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp b/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp index b87eaca..0dd99da 100644 --- a/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp +++ b/backend/lib/Target/RISCV/GISel/RISCVLegalizerInfo.cpp @@ -363,7 +363,11 @@ RISCVLegalizerInfo::RISCVLegalizerInfo(const RISCVSubtarget &Subtarget) { .customFor(HasZbb, {{S32, S32}}) .lower(); getActionDefinitionsBuilder(opcode(GenericOpcode::G_BITREVERSE)).maxScalar(0, S64).lower(); - getActionDefinitionsBuilder(opcode(GenericOpcode::G_BSWAP)).maxScalar(0, S64).lower(); + auto &ByteSwapActions = getActionDefinitionsBuilder(opcode(GenericOpcode::G_BSWAP)); + if (HasZbb) + ByteSwapActions.legalFor({S64}).clampScalar(0, S64, S64); + else + ByteSwapActions.maxScalar(0, S64).lower(); getActionDefinitionsBuilder( {opcode(GenericOpcode::G_CTLZ), opcode(GenericOpcode::G_CTTZ), opcode(GenericOpcode::G_CTLS)}) |