[llvm] eaa45dc - [RISCV] Remove unneeded isel (sext_inreg $rs1, i32) isel pattern from RISCVInstrInfoXTHead.td. NFC

[Craig Topper via llvm-commits]

Author: Craig Topper
Date: 2025-05-13T09:06:04-07:00
New Revision: eaa45dc6227e08e9a828297f98005addd668a417

URL: https://github.com/llvm/llvm-project/commit/eaa45dc6227e08e9a828297f98005addd668a417
DIFF: https://github.com/llvm/llvm-project/commit/eaa45dc6227e08e9a828297f98005addd668a417.diff

LOG: [RISCV] Remove unneeded isel (sext_inreg $rs1, i32) isel pattern from RISCVInstrInfoXTHead.td. NFC

This pattern is identical to the pattern for the sext.w encoding of
addiw which has higher priority.

Added: 
    

Modified: 
    llvm/lib/Target/RISCV/RISCVInstrInfoXTHead.td

Removed: 
    


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diff  --git a/llvm/lib/Target/RISCV/RISCVInstrInfoXTHead.td b/llvm/lib/Target/RISCV/RISCVInstrInfoXTHead.td
index b5df9f144261b..2fccbcaf2cf37 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoXTHead.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoXTHead.td
@@ -578,7 +578,6 @@ def : PatGprImm<rotr, TH_SRRI, uimmlog2xlen>;
 // it can be implemented with th.srri by negating the immediate.
 def : Pat<(rotl (XLenVT GPR:$rs1), uimmlog2xlen:$shamt),
           (TH_SRRI GPR:$rs1, (ImmSubFromXLen uimmlog2xlen:$shamt))>;
-def : Pat<(sext_inreg (XLenVT GPR:$rs1), i32), (TH_EXT GPR:$rs1, 31, 0)>;
 def : Pat<(sext_inreg (XLenVT GPR:$rs1), i16), (TH_EXT GPR:$rs1, 15, 0)>;
 def : Pat<(sext_inreg (XLenVT GPR:$rs1), i8), (TH_EXT GPR:$rs1, 7, 0)>;
 def : Pat<(sext_inreg (XLenVT GPR:$rs1), i1), (TH_EXT GPR:$rs1, 0, 0)>;