Backport mainline r178852, r172697 to ARM/embedded-4_6-branch
Committed.
2011-09-22 Joey Ye <joey...@arm.com>
Backport r178852 from mainline
2011-09-14 Julian Brown <jul...@codesourcery.com>
* config/arm/arm.c (arm_override_options): Add unaligned_access
support.
(arm_file_start): Emit attribute for unaligned access as
appropriate.
* config/arm/arm.md (UNSPEC_UNALIGNED_LOAD)
(UNSPEC_UNALIGNED_STORE): Add constants for unspecs.
(insv, extzv): Add unaligned-access support.
(extv): Change to expander. Likewise.
(extzv_t1, extv_regsi): Add helpers.
(unaligned_loadsi, unaligned_loadhis, unaligned_loadhiu)
(unaligned_storesi, unaligned_storehi): New.
(*extv_reg): New (previous extv implementation).
* config/arm/arm.opt (munaligned_access): Add option.
* config/arm/constraints.md (Uw): New constraint.
* expmed.c (store_bit_field_1): Adjust bitfield numbering according
to size of access, not size of unit, when BITS_BIG_ENDIAN !=
BYTES_BIG_ENDIAN. Don't use bitfield accesses for
volatile accesses when -fstrict-volatile-bitfields is in effect.
(extract_bit_field_1): Likewise.
Backport r172697 from mainline
2011-04-19 Wei Guozhi <car...@google.com>
PR target/47855
* config/arm/arm-protos.h (thumb1_legitimate_address_p): New
prototype.
* config/arm/arm.c (thumb1_legitimate_address_p): Remove the static
linkage.
* config/arm/constraints.md (Uu): New constraint.
* config/arm/arm.md (*arm_movqi_insn): Compute attr "length".
