Currently arm_legitimize_address doesn't handle Thumb-2 at all, resulting in
inefficient code. Since Thumb-2 supports similar address offsets use the Arm
legitimization code for Thumb-2 to get significant codesize and performance
gains. SPECINT2006 shows 0.4% gain on Cortex-A57, while SPECFP improves 0.2%.
gcc/
* config/arm/arm.c (arm_legitimize_address): Remove Thumb-2 bailout.
From-SVN: r276961
2019-10-14 Wilco Dijkstra <wdijkstr@arm.com>
+ * config/arm/arm.c (arm_legitimize_address): Remove Thumb-2 bailout.
+
+2019-10-14 Wilco Dijkstra <wdijkstr@arm.com>
+
* config/arm/arm.c (arm_option_override): Don't override sched
pressure algorithm.
return x;
}
- if (!TARGET_ARM)
- {
- /* TODO: legitimize_address for Thumb2. */
- if (TARGET_THUMB2)
- return x;
- return thumb_legitimize_address (x, orig_x, mode);
- }
+ if (TARGET_THUMB1)
+ return thumb_legitimize_address (x, orig_x, mode);
if (GET_CODE (x) == PLUS)
{