On 10/10/12 16:03, Greta Yorsh wrote:
Generate epilogue using LDRD in Thumb mode when prefer_ldrd_strd is set in
tune_params.
ChangeLog
gcc/
2012-09-13 Sameera Deshpande <sameera.deshpa...@arm.com>
Greta Yorsh <greta.yo...@arm.com>
* config/arm/arm.c (thumb2_emit_ldrd_pop): New function.
(arm_expand_epilogue): Use the new function.
This is OK, apart from:
+
+ /* Var j iterates over all the registers to gather all the registers in
+ saved_regs_mask. Var i gives index of saved registers in stack frame.
+ A PARALLEL RTX of register-pair is created here, so that pattern for
+ LDRD can be matched. As PC is always last register to be popped, and
+ we have already decremented num_regs if PC, we don't have to worry
+ about PC in this loop. */
+ for (i = 0, j = 0; i < (num_regs - (num_regs % 2)); j++)
+ if (saved_regs_mask & (1 << j))
+ {
+ gcc_assert (j != SP_REGNUM);
Please move the assert outside of the loop.
R.
