[PATCH] D45583: [RISCV] Add c.mv rs1, rs2 pattern for addi rs1, rs2, 0

[Sameer AbuAsal via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL329939: [RISCV] Add c.mv rs1, rs2 pattern for addi rs1, rs2, 0 (authored by sabuasal, committed by ).

Changed prior to commit:
  https://reviews.llvm.org/D45583?vs=142224&id=142231#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D45583

Files:
  llvm/trunk/lib/Target/RISCV/RISCVInstrInfoC.td
  llvm/trunk/test/MC/RISCV/compress-rv32i.s


Index: llvm/trunk/test/MC/RISCV/compress-rv32i.s
===================================================================
--- llvm/trunk/test/MC/RISCV/compress-rv32i.s
+++ llvm/trunk/test/MC/RISCV/compress-rv32i.s
@@ -20,6 +20,12 @@
 # RUN: | llvm-objdump  -triple riscv64 -mattr=+c -d -riscv-no-aliases - \
 # RUN: | FileCheck -check-prefixes=CHECK-BYTES,CHECK-INST %s
 
+# CHECK-BYTES: 2e 85
+# CHECK-ALIAS: add a0, zero, a1
+# CHECK-INST: c.mv a0, a1
+# CHECK: # encoding:  [0x2e,0x85]
+addi a0, a1, 0
+
 # CHECK-BYTES: e0 1f
 # CHECK-ALIAS: addi s0, sp, 1020
 # CHECK-INST: c.addi4spn s0, sp, 1020
Index: llvm/trunk/lib/Target/RISCV/RISCVInstrInfoC.td
===================================================================
--- llvm/trunk/lib/Target/RISCV/RISCVInstrInfoC.td
+++ llvm/trunk/lib/Target/RISCV/RISCVInstrInfoC.td
@@ -675,6 +675,8 @@
                   (C_MV GPRNoX0:$rs1, GPRNoX0:$rs2)>;
 def : CompressPat<(ADD GPRNoX0:$rs1, GPRNoX0:$rs2, X0),
                   (C_MV GPRNoX0:$rs1, GPRNoX0:$rs2)>;
+def : CompressPat<(ADDI GPRNoX0:$rs1, GPRNoX0:$rs2, 0),
+                  (C_MV GPRNoX0:$rs1, GPRNoX0:$rs2)>;
 def : CompressPat<(EBREAK), (C_EBREAK)>;
 def : CompressPat<(JALR X1, GPRNoX0:$rs1, 0),
                   (C_JALR GPRNoX0:$rs1)>;


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D45583.142231.patch
Type: text/x-patch
Size: 1252 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20180412/e74ad600/attachment.bin>