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Diffstat (limited to 'gcc/config/rs6000/rs6000.c')
-rw-r--r--gcc/config/rs6000/rs6000.c105
1 files changed, 83 insertions, 22 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 4ebea38388b..9b9fefda2af 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -171,7 +171,7 @@ int rs6000_long_double_type_size;
/* IEEE quad extended precision long double. */
int rs6000_ieeequad;
-/* Whether -mabi=altivec has appeared. */
+/* Nonzero to use AltiVec ABI. */
int rs6000_altivec_abi;
/* Nonzero if we want SPE ABI extensions. */
@@ -262,12 +262,14 @@ int rs6000_alignment_flags;
struct {
bool aix_struct_ret; /* True if -maix-struct-ret was used. */
bool alignment; /* True if -malign- was used. */
- bool abi; /* True if -mabi=spe/nospe was used. */
+ bool spe_abi; /* True if -mabi=spe/no-spe was used. */
+ bool altivec_abi; /* True if -mabi=altivec/no-altivec used. */
bool spe; /* True if -mspe= was used. */
bool float_gprs; /* True if -mfloat-gprs= was used. */
bool isel; /* True if -misel was used. */
bool long_double; /* True if -mlong-double- was used. */
bool ieee; /* True if -mabi=ieee/ibmlongdouble used. */
+ bool vrsave; /* True if -mvrsave was used. */
} rs6000_explicit_options;
struct builtin_description
@@ -667,6 +669,25 @@ struct processor_costs ppc8540_cost = {
1, /* prefetch streams /*/
};
+/* Instruction costs on E300C2 and E300C3 cores. */
+static const
+struct processor_costs ppce300c2c3_cost = {
+ COSTS_N_INSNS (4), /* mulsi */
+ COSTS_N_INSNS (4), /* mulsi_const */
+ COSTS_N_INSNS (4), /* mulsi_const9 */
+ COSTS_N_INSNS (4), /* muldi */
+ COSTS_N_INSNS (19), /* divsi */
+ COSTS_N_INSNS (19), /* divdi */
+ COSTS_N_INSNS (3), /* fp */
+ COSTS_N_INSNS (4), /* dmul */
+ COSTS_N_INSNS (18), /* sdiv */
+ COSTS_N_INSNS (33), /* ddiv */
+ 32,
+ 32, /* l1 cache */
+ 256, /* l2 cache */
+ 1, /* prefetch streams /*/
+};
+
/* Instruction costs on POWER4 and POWER5 processors. */
static const
struct processor_costs power4_cost = {
@@ -1418,6 +1439,8 @@ rs6000_override_options (const char *default_cpu)
{"8540", PROCESSOR_PPC8540, POWERPC_BASE_MASK | MASK_STRICT_ALIGN},
/* 8548 has a dummy entry for now. */
{"8548", PROCESSOR_PPC8540, POWERPC_BASE_MASK | MASK_STRICT_ALIGN},
+ {"e300c2", PROCESSOR_PPCE300C2, POWERPC_BASE_MASK | MASK_SOFT_FLOAT},
+ {"e300c3", PROCESSOR_PPCE300C3, POWERPC_BASE_MASK},
{"860", PROCESSOR_MPCCORE, POWERPC_BASE_MASK | MASK_SOFT_FLOAT},
{"970", PROCESSOR_POWER4,
POWERPC_7400_MASK | MASK_PPC_GPOPT | MASK_MFCRF | MASK_POWERPC64},
@@ -1524,6 +1547,14 @@ rs6000_override_options (const char *default_cpu)
if (TARGET_E500)
rs6000_isel = 1;
+ if (rs6000_cpu == PROCESSOR_PPCE300C2 || rs6000_cpu == PROCESSOR_PPCE300C3)
+ {
+ if (TARGET_ALTIVEC)
+ error ("AltiVec not supported in this target");
+ if (TARGET_SPE)
+ error ("Spe not supported in this target");
+ }
+
/* If we are optimizing big endian systems for space, use the load/store
multiple and string instructions. */
if (BYTES_BIG_ENDIAN && optimize_size)
@@ -1590,11 +1621,18 @@ rs6000_override_options (const char *default_cpu)
if (TARGET_XCOFF && TARGET_ALTIVEC)
rs6000_altivec_abi = 1;
- /* Set Altivec ABI as default for PowerPC64 Linux. */
- if (TARGET_ELF && TARGET_64BIT)
+ /* The AltiVec ABI is the default for PowerPC-64 GNU/Linux. For
+ PowerPC-32 GNU/Linux, -maltivec implies the AltiVec ABI. It can
+ be explicitly overridden in either case. */
+ if (TARGET_ELF)
{
- rs6000_altivec_abi = 1;
- TARGET_ALTIVEC_VRSAVE = 1;
+ if (!rs6000_explicit_options.altivec_abi
+ && (TARGET_64BIT || TARGET_ALTIVEC))
+ rs6000_altivec_abi = 1;
+
+ /* Enable VRSAVE for AltiVec ABI, unless explicitly overridden. */
+ if (!rs6000_explicit_options.vrsave)
+ TARGET_ALTIVEC_VRSAVE = rs6000_altivec_abi;
}
/* Set the Darwin64 ABI as default for 64-bit Darwin. */
@@ -1638,7 +1676,7 @@ rs6000_override_options (const char *default_cpu)
/* For the powerpc-eabispe configuration, we set all these by
default, so let's unset them if we manually set another
CPU that is not the E500. */
- if (!rs6000_explicit_options.abi)
+ if (!rs6000_explicit_options.spe_abi)
rs6000_spe_abi = 0;
if (!rs6000_explicit_options.spe)
rs6000_spe = 0;
@@ -1836,6 +1874,11 @@ rs6000_override_options (const char *default_cpu)
rs6000_cost = &ppc8540_cost;
break;
+ case PROCESSOR_PPCE300C2:
+ case PROCESSOR_PPCE300C3:
+ rs6000_cost = &ppce300c2c3_cost;
+ break;
+
case PROCESSOR_POWER4:
case PROCESSOR_POWER5:
rs6000_cost = &power4_cost;
@@ -2131,6 +2174,7 @@ rs6000_handle_option (size_t code, const char *arg, int value)
break;
case OPT_mvrsave_:
+ rs6000_explicit_options.vrsave = true;
rs6000_parse_yes_no_option ("vrsave", arg, &(TARGET_ALTIVEC_VRSAVE));
break;
@@ -2188,19 +2232,20 @@ rs6000_handle_option (size_t code, const char *arg, int value)
case OPT_mabi_:
if (!strcmp (arg, "altivec"))
{
- rs6000_explicit_options.abi = true;
+ rs6000_explicit_options.altivec_abi = true;
rs6000_altivec_abi = 1;
+
+ /* Enabling the AltiVec ABI turns off the SPE ABI. */
rs6000_spe_abi = 0;
}
else if (! strcmp (arg, "no-altivec"))
{
- /* ??? Don't set rs6000_explicit_options.abi here, to allow
- the default for rs6000_spe_abi to be chosen later. */
+ rs6000_explicit_options.altivec_abi = true;
rs6000_altivec_abi = 0;
}
else if (! strcmp (arg, "spe"))
{
- rs6000_explicit_options.abi = true;
+ rs6000_explicit_options.spe_abi = true;
rs6000_spe_abi = 1;
rs6000_altivec_abi = 0;
if (!TARGET_SPE_ABI)
@@ -2208,7 +2253,7 @@ rs6000_handle_option (size_t code, const char *arg, int value)
}
else if (! strcmp (arg, "no-spe"))
{
- rs6000_explicit_options.abi = true;
+ rs6000_explicit_options.spe_abi = true;
rs6000_spe_abi = 0;
}
@@ -3619,19 +3664,29 @@ rs6000_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
/* We accept [reg + reg] and [reg + OFFSET]. */
if (GET_CODE (x) == PLUS)
- {
- rtx op1 = XEXP (x, 0);
- rtx op2 = XEXP (x, 1);
+ {
+ rtx op1 = XEXP (x, 0);
+ rtx op2 = XEXP (x, 1);
+ rtx y;
- op1 = force_reg (Pmode, op1);
+ op1 = force_reg (Pmode, op1);
- if (GET_CODE (op2) != REG
- && (GET_CODE (op2) != CONST_INT
- || !SPE_CONST_OFFSET_OK (INTVAL (op2))))
- op2 = force_reg (Pmode, op2);
+ if (GET_CODE (op2) != REG
+ && (GET_CODE (op2) != CONST_INT
+ || !SPE_CONST_OFFSET_OK (INTVAL (op2))
+ || (GET_MODE_SIZE (mode) > 8
+ && !SPE_CONST_OFFSET_OK (INTVAL (op2) + 8))))
+ op2 = force_reg (Pmode, op2);
- return gen_rtx_PLUS (Pmode, op1, op2);
- }
+ /* We can't always do [reg + reg] for these, because [reg +
+ reg + offset] is not a legitimate addressing mode. */
+ y = gen_rtx_PLUS (Pmode, op1, op2);
+
+ if (GET_MODE_SIZE (mode) > 8 && REG_P (op2))
+ return force_reg (Pmode, y);
+ else
+ return y;
+ }
return force_reg (Pmode, x);
}
@@ -9166,6 +9221,10 @@ rs6000_init_builtins (void)
if (built_in_decls [BUILT_IN_CLOG])
set_user_assembler_name (built_in_decls [BUILT_IN_CLOG], "__clog");
#endif
+
+#ifdef SUBTARGET_INIT_BUILTINS
+ SUBTARGET_INIT_BUILTINS;
+#endif
}
/* Search through a set of builtins and enable the mask bits.
@@ -18502,6 +18561,8 @@ rs6000_issue_rate (void)
case CPU_PPC7400:
case CPU_PPC8540:
case CPU_CELL:
+ case CPU_PPCE300C2:
+ case CPU_PPCE300C3:
return 2;
case CPU_RIOS2:
case CPU_PPC604:
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