diff options
Diffstat (limited to 'gcc/config/arm/arm.c')
| -rw-r--r-- | gcc/config/arm/arm.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c index a1abe96..13cf323 100644 --- a/gcc/config/arm/arm.c +++ b/gcc/config/arm/arm.c @@ -386,6 +386,8 @@ static int thumb_call_reg_needed; #define FL_ARCH6 (1 << 12) /* Architecture rel 6. Adds media instructions. */ #define FL_VFPV2 (1 << 13) /* Vector Floating Point V2. */ +#define FL_WBUF (1 << 14) /* Schedule for write buffer ops. + Note: ARM6 & 7 derivatives only. */ #define FL_IWMMXT (1 << 29) /* XScale v2 or "Intel Wireless MMX technology". */ @@ -438,7 +440,7 @@ int arm_arch6 = 0; int arm_ld_sched = 0; /* Nonzero if this chip is a StrongARM. */ -int arm_is_strong = 0; +int arm_tune_strongarm = 0; /* Nonzero if this chip is a Cirrus variant. */ int arm_arch_cirrus = 0; @@ -452,8 +454,9 @@ int arm_arch_xscale = 0; /* Nonzero if tuning for XScale */ int arm_tune_xscale = 0; -/* Nonzero if this chip is an ARM6 or an ARM7. */ -int arm_is_6_or_7 = 0; +/* Nonzero if we want to tune for stores that access the write-buffer. + This typicallly means an ARM6 or ARM7 with MMU or MPU. */ +int arm_tune_wbuf = 0; /* Nonzero if generating Thumb instructions. */ int thumb_code = 0; @@ -980,10 +983,9 @@ arm_override_options (void) arm_arch_cirrus = (insn_flags & FL_CIRRUS) != 0; arm_ld_sched = (tune_flags & FL_LDSCHED) != 0; - arm_is_strong = (tune_flags & FL_STRONG) != 0; + arm_tune_strongarm = (tune_flags & FL_STRONG) != 0; thumb_code = (TARGET_ARM == 0); - arm_is_6_or_7 = (((tune_flags & (FL_MODE26 | FL_MODE32)) - && !(tune_flags & FL_ARCH4))) != 0; + arm_tune_wbuf = (tune_flags & FL_WBUF) != 0; arm_tune_xscale = (tune_flags & FL_XSCALE) != 0; arm_arch_iwmmxt = (insn_flags & FL_IWMMXT) != 0; @@ -1182,7 +1184,7 @@ arm_override_options (void) /* StrongARM has early execution of branches, so a sequence that is worth skipping is shorter. */ - if (arm_is_strong) + if (arm_tune_strongarm) max_insns_skipped = 3; } @@ -1396,7 +1398,7 @@ use_return_insn (int iscond, rtx sibling) /* On StrongARM, conditional returns are expensive if they aren't taken and multiple registers have been stacked. */ - if (iscond && arm_is_strong) + if (iscond && arm_tune_strongarm) { /* Conditional return when just the LR is stored is a simple conditional-load instruction, that's not expensive. */ |