2012-03-14 H.J. Lu <hongjiu.lu@intel.com>
PR target/50797
* config/i386/i386-opts.h (pmode): New.
* config/i386/i386.c (ix86_option_override_internal): Properly
check and set ix86_pmode.
* config/i386/i386.h (Pmode): Check ix86_pmode instead of
TARGET_64BIT.
* config/i386/i386.opt (maddress-mode=): New.
* doc/invoke.texi: Document -maddress-mode=short|long for x86.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@185396
138bc75d-0d04-0410-961f-
82ee72b054a4
+2012-03-14 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR target/50797
+ * config/i386/i386-opts.h (pmode): New.
+
+ * config/i386/i386.c (ix86_option_override_internal): Properly
+ check and set ix86_pmode.
+
+ * config/i386/i386.h (Pmode): Check ix86_pmode instead of
+ TARGET_64BIT.
+
+ * config/i386/i386.opt (maddress-mode=): New.
+
+ * doc/invoke.texi: Document -maddress-mode=short|long for x86.
+
2012-03-14 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
* dwarf2cfi.c (def_cfa_0): Remove MIPS_DEBUGGING_INFO handling.
CM_LARGE_PIC /* No assumptions. */
};
+enum pmode {
+ PMODE_SI, /* Pmode == SImode. */
+ PMODE_DI /* Pmode == DImode. */
+};
+
enum asm_dialect {
ASM_ATT,
ASM_INTEL
else
ix86_arch_specified = 1;
+ if (global_options_set.x_ix86_pmode)
+ {
+ if ((TARGET_LP64 && ix86_pmode == PMODE_SI)
+ || (!TARGET_64BIT && ix86_pmode == PMODE_DI))
+ error ("address mode %qs not supported in the %s bit mode",
+ TARGET_64BIT ? "short" : "long",
+ TARGET_64BIT ? "64" : "32");
+ }
+ else
+ ix86_pmode = TARGET_LP64 ? PMODE_DI : PMODE_SI;
+
if (!global_options_set.x_ix86_abi)
ix86_abi = DEFAULT_ABI;
/* Specify the machine mode that pointers have.
After generation of rtl, the compiler makes no further distinction
between pointers and any other objects of this machine mode. */
-#define Pmode (TARGET_64BIT ? DImode : SImode)
+#define Pmode (ix86_pmode == PMODE_DI ? DImode : SImode)
/* A C expression whose value is zero if pointers that need to be extended
from being `POINTER_SIZE' bits wide to `Pmode' are sign-extended and
EnumValue
Enum(cmodel) String(kernel) Value(CM_KERNEL)
+maddress-mode=
+Target RejectNegative Joined Enum(pmode) Var(ix86_pmode) Init(PMODE_SI)
+Use given address mode
+
+Enum
+Name(pmode) Type(enum pmode)
+Known address mode (for use with the -maddress-mode= option):
+
+EnumValue
+Enum(pmode) String(short) Value(PMODE_SI)
+
+EnumValue
+Enum(pmode) String(long) Value(PMODE_DI)
+
mcpu=
Target RejectNegative Joined Undocumented Alias(mtune=) Warn(%<-mcpu=%> is deprecated; use %<-mtune=%> or %<-march=%> instead)
-mveclibabi=@var{type} -mvect8-ret-in-mem @gol
-mpc32 -mpc64 -mpc80 -mstackrealign @gol
-momit-leaf-frame-pointer -mno-red-zone -mno-tls-direct-seg-refs @gol
--mcmodel=@var{code-model} -mabi=@var{name} @gol
+-mcmodel=@var{code-model} -mabi=@var{name} -maddress-mode=@var{mode} @gol
-m32 -m64 -mx32 -mlarge-data-threshold=@var{num} @gol
-msse2avx -mfentry -m8bit-idiv @gol
-mavx256-split-unaligned-load -mavx256-split-unaligned-store}
@opindex mcmodel=large
Generate code for the large model. This model makes no assumptions
about addresses and sizes of sections.
+
+@item -maddress-mode=long
+@opindex maddress-mode=long
+Generate code for long address mode. This is only supported for 64-bit
+and x32 environments. It is the default address mode for 64-bit
+environments.
+
+@item -maddress-mode=short
+@opindex maddress-mode=short
+Generate code for short address mode. This is only supported for 32-bit
+and x32 environments. It is the default address mode for 32-bit and
+x32 environments.
@end table
@node i386 and x86-64 Windows Options