diff options
Diffstat (limited to 'gcc/config/arm/arm.h')
| -rw-r--r-- | gcc/config/arm/arm.h | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h index f757ead07e1..0cb1562e636 100644 --- a/gcc/config/arm/arm.h +++ b/gcc/config/arm/arm.h @@ -949,6 +949,16 @@ extern const char * structure_size_string; fixed_regs[regno] = call_used_regs[regno] = 1; \ } \ \ + if (TARGET_THUMB && optimize_size) \ + { \ + /* When optimizing for size, it's better not to use \ + the HI regs, because of the overhead of stacking \ + them. */ \ + for (regno = FIRST_HI_REGNUM; \ + regno <= LAST_HI_REGNUM; ++regno) \ + fixed_regs[regno] = call_used_regs[regno] = 1; \ + } \ + \ if (TARGET_CIRRUS) \ { \ for (regno = FIRST_ARM_FP_REGNUM; \ @@ -1055,8 +1065,11 @@ extern const char * structure_size_string; /* The number of the last argument register. */ #define LAST_ARG_REGNUM ARG_REGISTER (NUM_ARG_REGS) -/* The number of the last "lo" register (thumb). */ +/* The numbers of the Thumb register ranges. */ +#define FIRST_LO_REGNUM 0 #define LAST_LO_REGNUM 7 +#define FIRST_HI_REGNUM 8 +#define LAST_HI_REGNUM 11 /* The register that holds the return address in exception handlers. */ #define EXCEPTION_LR_REGNUM 2 @@ -2693,6 +2706,7 @@ extern int making_const_table; {"reg_or_int_operand", {SUBREG, REG, CONST_INT}}, \ {"index_operand", {SUBREG, REG, CONST_INT}}, \ {"thumb_cmp_operand", {SUBREG, REG, CONST_INT}}, \ + {"thumb_cmpneg_operand", {CONST_INT}}, \ {"thumb_cbrch_target_operand", {SUBREG, REG, MEM}}, \ {"offsettable_memory_operand", {MEM}}, \ {"bad_signed_byte_operand", {MEM}}, \ |