diff mbox series

[12/15] tcg/riscv: Do not accept zero operands for logicals, multiply or divide

Message ID 20240312143839.136408-13-richard.henderson@linaro.org
State New
Headers show
Series tcg: Canonicalize operations during optimize | expand

Commit Message

Richard Henderson March 12, 2024, 2:38 p.m. UTC 
Trust that the optimizer has folded all of these away.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 tcg/riscv/tcg-target-con-set.h | 1 -
 tcg/riscv/tcg-target.c.inc     | 4 +---
 2 files changed, 1 insertion(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/tcg/riscv/tcg-target-con-set.h b/tcg/riscv/tcg-target-con-set.h
index 13a383aeb1..527d2fd4d9 100644
--- a/tcg/riscv/tcg-target-con-set.h
+++ b/tcg/riscv/tcg-target-con-set.h
@@ -16,7 +16,6 @@  C_O1_I1(r, r)
 C_O1_I2(r, r, r)
 C_O1_I2(r, r, ri)
 C_O1_I2(r, r, rI)
-C_O1_I2(r, rZ, rZ)
 C_N1_I2(r, r, rM)
 C_O1_I4(r, r, rI, rM, rM)
 C_O2_I4(r, r, rZ, rZ, rM, rM)
diff --git a/tcg/riscv/tcg-target.c.inc b/tcg/riscv/tcg-target.c.inc
index 6b28f2f85d..0dc1b2d8f7 100644
--- a/tcg/riscv/tcg-target.c.inc
+++ b/tcg/riscv/tcg-target.c.inc
@@ -1929,8 +1929,6 @@  static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
 
     case INDEX_op_sub_i32:
     case INDEX_op_sub_i64:
-        return C_O1_I2(r, r, r);
-
     case INDEX_op_andc_i32:
     case INDEX_op_andc_i64:
     case INDEX_op_orc_i32:
@@ -1951,7 +1949,7 @@  static TCGConstraintSetIndex tcg_target_op_def(TCGOpcode op)
     case INDEX_op_divu_i64:
     case INDEX_op_rem_i64:
     case INDEX_op_remu_i64:
-        return C_O1_I2(r, rZ, rZ);
+        return C_O1_I2(r, r, r);
 
     case INDEX_op_shl_i32:
     case INDEX_op_shr_i32: