[RISCV] Add alias for HFENCE.VVMA

Signed-off-by: Eric Tang <eric.tang@starfivetech.com>
Differential Revision: https://reviews.llvm.org/D120878

diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfo.td b/llvm/lib/Target/RISCV/RISCVInstrInfo.td
index fe1e984..7f5b3c8 100644 (file)
--- a/llvm/lib/Target/RISCV/RISCVInstrInfo.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfo.td
@@ -901,6 +901,9 @@ def : InstAlias<"sfence.vma $rs", (SFENCE_VMA GPR:$rs, X0)>;
 def : InstAlias<"hfence.gvma",     (HFENCE_GVMA      X0, X0)>;
 def : InstAlias<"hfence.gvma $rs", (HFENCE_GVMA GPR:$rs, X0)>;
 
+def : InstAlias<"hfence.vvma",     (HFENCE_VVMA      X0, X0)>;
+def : InstAlias<"hfence.vvma $rs", (HFENCE_VVMA GPR:$rs, X0)>;
+
 let EmitPriority = 0 in {
 def : InstAlias<"lb $rd, (${rs1})",
                 (LB  GPR:$rd, GPR:$rs1, 0)>;

diff --git a/llvm/test/MC/RISCV/rvi-aliases-valid.s b/llvm/test/MC/RISCV/rvi-aliases-valid.s
index 3057e6c..69e4d31 100644 (file)
--- a/llvm/test/MC/RISCV/rvi-aliases-valid.s
+++ b/llvm/test/MC/RISCV/rvi-aliases-valid.s
@@ -262,6 +262,12 @@ hfence.gvma
 # CHECK-S-OBJ-NOALIAS: hfence.gvma a0, zero
 # CHECK-S-OBJ: hfence.gvma a0
 hfence.gvma a0
+# CHECK-S-OBJ-NOALIAS: hfence.vvma zero, zero
+# CHECK-S-OBJ: hfence.vvma
+hfence.vvma
+# CHECK-S-OBJ-NOALIAS: hfence.vvma a0, zero
+# CHECK-S-OBJ: hfence.vvma a0
+hfence.vvma a0
 
 # The following aliases are accepted as input but the canonical form
 # of the instruction will always be printed.