https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96770
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Christophe Lyon <cl...@gcc.gnu.org>: https://gcc.gnu.org/g:c3c3e2c9e88e25a410a2fe089782b094e911bb39 commit r11-4599-gc3c3e2c9e88e25a410a2fe089782b094e911bb39 Author: Christophe Lyon <christophe.l...@linaro.org> Date: Mon Nov 2 07:34:50 2020 +0000 arm: Improve handling of relocations with small offsets with -mpure-code on v6m (PR96770) With -mpure-code on v6m (thumb-1), we can use small offsets with upper/lower relocations to avoid the extra addition of the offset. This patch accepts expressions symbol+offset as legitimate constants when the literal pool is disabled, making sure that the offset is within the range supported by thumb-1 [0..255] as described in the AAELF32 documentation. It also makes sure that thumb1_movsi_insn emits an error in case we try to use it with an unsupported RTL construct. 2020-09-28 Christophe Lyon <christophe.l...@linaro.org> gcc/ PR target/96770 * config/arm/arm.c (thumb_legitimate_constant_p): Accept (symbol_ref + addend) when literal pool is disabled. (arm_valid_symbolic_address_p): Add support for thumb-1 without MOVT/MOVW. * config/arm/thumb1.md (*thumb1_movsi_insn): Accept (symbol_ref + addend) in the pure-code alternative. gcc/testsuite/ PR target/96770 * gcc.target/arm/pure-code/pr96770.c: New test.
