({MASK,TARGET}_STACK_PROBE): New macros.

(TARGET_SWITCHES): Add -fstack-arg-probe.

From-SVN: r12710

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index f56f0d98fdd25627f8c048e02ee63570713972b6..480a55b8ab6e7fd2320a16258e77d8816c8c5d97 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -95,6 +95,7 @@ extern int target_flags;
 #define MASK_NO_PSEUDO         000010000000    /* Move op's args -> pseudos */
 #define MASK_DEBUG_ARG         000020000000    /* Debug function_arg */   
 #define MASK_SCHEDULE_PROLOGUE  000040000000    /* Emit prologue as rtl */
+#define MASK_STACK_PROBE       000100000000    /* Enable stack probing */
 
 /* Use the floating point instructions */
 #define TARGET_80387 (target_flags & MASK_80387)
@@ -165,6 +166,7 @@ extern int target_flags;
 #define TARGET_USE_ANY_REG (ix86_cpu == PROCESSOR_I486)
 #define TARGET_CMOVE (ix86_isa == PROCESSOR_PENTIUMPRO)
 #define TARGET_DEEP_BRANCH_PREDICTION (ix86_cpu == PROCESSOR_PENTIUMPRO)
+#define TARGET_STACK_PROBE (target_flags & MASK_STACK_PROBE)
 
 #define TARGET_SWITCHES                                                        \
 { { "80387",                    MASK_80387 },                          \
@@ -202,6 +204,8 @@ extern int target_flags;
   { "no-move",                  MASK_NO_MOVE },                        \
   { "debug-arg",                MASK_DEBUG_ARG },                      \
   { "no-debug-arg",            -MASK_DEBUG_ARG },                      \
+  { "stack-arg-probe",          MASK_STACK_PROBE },                    \
+  { "no-stack-arg-probe",      -MASK_STACK_PROBE },                    \
   SUBTARGET_SWITCHES                                                   \
   { "", MASK_SCHEDULE_PROLOGUE | TARGET_DEFAULT}}