r16-2614-g965564eafb721f had a typo where it would assume byte==0
rather than use the byte (offset) that was passed.
This fixes that typo and also fixes the comment since it is not just
about lowerpart subregs but all non-paradoxical subregs.
Pushed as obvious after bootstrap/test on x86_64-linux-gnu.
gcc/ChangeLog:
* simplify-rtx.cc (simplify_context::simplify_subreg): Use
byte instead of 0 when calling simplify_subreg.
Signed-off-by: Andrew Pinski <quic_apin...@quicinc.com>
---
gcc/simplify-rtx.cc | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/gcc/simplify-rtx.cc b/gcc/simplify-rtx.cc
index 125048da181..442da9f40fa 100644
--- a/gcc/simplify-rtx.cc
+++ b/gcc/simplify-rtx.cc
@@ -8398,7 +8398,7 @@ simplify_context::simplify_subreg (machine_mode
outermode, rtx op,
return simplify_gen_relational (GET_CODE (op), outermode, innermode,
XEXP (op, 0), XEXP (op, 1));
- /* Distribute lowpart subregs through logic ops in cases where one term
+ /* Distribute non-paradoxical subregs through logic ops in cases where one
term
disappears.
(subreg:M1 (and:M2 X C1)) -> (subreg:M1 X)
@@ -8416,7 +8416,7 @@ simplify_context::simplify_subreg (machine_mode
outermode, rtx op,
&& (GET_CODE (op) == AND || GET_CODE (op) == IOR || GET_CODE (op) == XOR)
&& CONSTANT_P (XEXP (op, 1)))
{
- rtx op1_subreg = simplify_subreg (outermode, XEXP (op, 1), innermode, 0);
+ rtx op1_subreg = simplify_subreg (outermode, XEXP (op, 1), innermode,
byte);
if (op1_subreg == CONSTM1_RTX (outermode))
{
if (GET_CODE (op) == IOR)
@@ -8424,13 +8424,13 @@ simplify_context::simplify_subreg (machine_mode
outermode, rtx op,
rtx op0 = XEXP (op, 0);
if (GET_CODE (op) == XOR)
op0 = simplify_gen_unary (NOT, innermode, op0, innermode);
- return simplify_gen_subreg (outermode, op0, innermode, 0);
+ return simplify_gen_subreg (outermode, op0, innermode, byte);
}
if (op1_subreg == CONST0_RTX (outermode))
return (GET_CODE (op) == AND
? op1_subreg
- : simplify_gen_subreg (outermode, XEXP (op, 0), innermode, 0));
+ : simplify_gen_subreg (outermode, XEXP (op, 0), innermode,
byte));
}
return NULL_RTX;
--
2.43.0
