LA32 does not support stptr/ldptr instructions. Change stptr/ldptr
to st/ld when imm is 0.
stptr.w $r27,$r3,0 -> st.w $r27,$r3,0
ldptr.w $r27,$r3,0 -> ld.w $r27,$r3,0
gcc/ChangeLog:
* config/loongarch/loongarch.cc (loongarch_output_move): If
GET_CODE(XEXP (src, 0)) == REG, use ld/st instead.
---
gcc/config/loongarch/loongarch.cc | 16 ++++++++++++----
1 file changed, 12 insertions(+), 4 deletions(-)
diff --git a/gcc/config/loongarch/loongarch.cc
b/gcc/config/loongarch/loongarch.cc
index ee17dac4daa..9cf7a9b19c7 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -5021,10 +5021,14 @@ loongarch_output_move (rtx *operands)
/* Matching address type with a 12bit offset and
ADDRESS_LO_SUM. */
if (const_arith_operand (offset, Pmode)
- || GET_CODE (offset) == LO_SUM)
+ || GET_CODE (offset) == LO_SUM
+ || GET_CODE(XEXP (dest, 0)) == REG)
return "st.w\t%z1,%0";
else
- return "stptr.w\t%z1,%0";
+ {
+ gcc_assert (TARGET_64BIT);
+ return "stptr.w\t%z1,%0";
+ }
case 8:
if (const_arith_operand (offset, Pmode)
|| GET_CODE (offset) == LO_SUM)
@@ -5066,10 +5070,14 @@ loongarch_output_move (rtx *operands)
/* Matching address type with a 12bit offset and
ADDRESS_LO_SUM. */
if (const_arith_operand (offset, Pmode)
- || GET_CODE (offset) == LO_SUM)
+ || GET_CODE (offset) == LO_SUM
+ || GET_CODE(XEXP (src, 0)) == REG)
return "ld.w\t%0,%1";
else
- return "ldptr.w\t%0,%1";
+ {
+ gcc_assert (TARGET_64BIT);
+ return "ldptr.w\t%0,%1";
+ }
case 8:
if (const_arith_operand (offset, Pmode)
|| GET_CODE (offset) == LO_SUM)
--
2.34.1
