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| author | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-16 16:13:12 +0800 |
|---|---|---|
| committer | Richard-Qin-X <richard.qin.001@gmail.com> | 2026-08-16 16:13:12 +0800 |
| commit | ca25d25d4c5131491a50b1a94e63e9b2d3c34ed4 (patch) | |
| tree | 995b2f5e2a1312bced1d899be4fd87f95e49c73b /backend/lib/Target/RISCV | |
| parent | 4f7b41c3c711d6c6fa4e422f3eec8961c91eea7a (diff) | |
| download | rcc-project-ca25d25d4c5131491a50b1a94e63e9b2d3c34ed4.tar.gz rcc-project-ca25d25d4c5131491a50b1a94e63e9b2d3c34ed4.tar.xz | |
[RISCV][GlobalISel] Select comparisons against zero
Diffstat (limited to 'backend/lib/Target/RISCV')
| -rw-r--r-- | backend/lib/Target/RISCV/RISCVGISel.rccdesc | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/backend/lib/Target/RISCV/RISCVGISel.rccdesc b/backend/lib/Target/RISCV/RISCVGISel.rccdesc index 97ed3d6..bd946be 100644 --- a/backend/lib/Target/RISCV/RISCVGISel.rccdesc +++ b/backend/lib/Target/RISCV/RISCVGISel.rccdesc @@ -155,3 +155,24 @@ selection_rules: - { index: 0, bank: GPR } - { index: 1, bank: FPR } apply: { opcode: FCLASS_D } + - + id: select_g_icmp_ne_zero + priority: 200 + match: + opcode: G_ICMP + result_type: { kind: scalar, bits: 64 } + integer_predicate: { index: 1, value: ne } + operand_types: + - { index: 2, kind: scalar, bits: 64 } + operand_banks: + - { index: 0, bank: GPR } + - { index: 2, bank: GPR } + operand_def_constants: + - { index: 3, value: 0 } + apply: + opcode: SLTU + operands: + - { operand: 0 } + - { physical_register: X0, flags: [use] } + - { operand: 2 } + erase_operand_definitions: [3] |