REGNO can only be called on REGs, not SUBREGs; and INTVAL does not work
on REGs.
2017-02-21 Segher Boessenkool <segher@kernel.crashing.org>
* config/microblaze/microblaze.c (microblaze_expand_shift): Do not
test for register moves to themselves.
* config/microblaze/microblaze.md (*ashlsi3_byone, *ashrsi3_byone,
*lshrsi3_byone): Test for const1_rtx instead of calling INTVAL on
something that isn't necessarily a CONST_INT.
---
gcc/config/microblaze/microblaze.c | 5 ++---
gcc/config/microblaze/microblaze.md | 6 +++---
2 files changed, 5 insertions(+), 6 deletions(-)
diff --git a/gcc/config/microblaze/microblaze.c b/gcc/config/microblaze/microblaze.c
index 746bef1..4850e85 100644
--- a/gcc/config/microblaze/microblaze.c
+++ b/gcc/config/microblaze/microblaze.c
@@ -3322,11 +3322,10 @@ microblaze_expand_shift (rtx operands[])
|| (GET_CODE (operands[1]) == REG)
|| (GET_CODE (operands[1]) == SUBREG));
- /* Shift by zero -- copy regs if necessary. */
+ /* Shift by zero -- copy regs. */
if ((GET_CODE (operands[2]) == CONST_INT) && (INTVAL (operands[2]) == 0))
{
- if (REGNO (operands[0]) != REGNO (operands[1]))
- emit_insn (gen_movsi (operands[0], operands[1]));
+ emit_insn (gen_movsi (operands[0], operands[1]));
return 1;
}