* i386.h: (TARGET_SWITCHES) Add description fields for flags

	documented in install.texi.
	(TARGET_OPTIONS) Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@22516 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d120e71..ef66c9d 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+Mon Sep 21 09:14:49 1998   Robert Lipe  <robertl@dgii.com>
+
+       * i386.h: (TARGET_SWITCHES) Add description fields for flags 
+       documented in install.texi.
+       (TARGET_OPTIONS) Likewise.
+
 Mon Sep 21 01:39:03 PDT 1998 Jeff Law  (law@cygnus.com)
 
        * version.c: Bump for snapshot.
@@ -14,7 +20,7 @@ Mon Sep 21 01:53:05 1998  Felix Lee  <flee@cygnus.com>
 Mon Sep 21 00:52:12 1998  Per Bothner  <bothner@cygnus.com>
 
        * Makefile.in (LIBS):  Link in libiberty.a.
-       * c-common.c, gcc.c, toplev.c:  Repalce (some) bcopy calls by memcpy.
+       * c-common.c, gcc.c, toplev.c:  Replace (some) bcopy calls by memcpy.
 
 Sun Sep 20 23:28:11 1998  Richard Henderson  <rth@cygnus.com>
 

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index cce3a0b..ef12db8 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -177,33 +177,33 @@ extern const int x86_double_with_add;
 #define TARGET_STACK_PROBE (target_flags & MASK_STACK_PROBE)
 
 #define TARGET_SWITCHES                                                        \
-{ { "80387",                    MASK_80387 },                          \
-  { "no-80387",                        -MASK_80387 },                          \
-  { "hard-float",               MASK_80387 },                          \
-  { "soft-float",              -MASK_80387 },                          \
-  { "no-soft-float",            MASK_80387 },                          \
-  { "386",                      0 },                                   \
-  { "no-386",                   0 },                                   \
-  { "486",                      0 },                                   \
-  { "no-486",                   0 },                                   \
-  { "pentium",                  0 },                                   \
-  { "pentiumpro",               0 },                                   \
-  { "rtd",                      MASK_RTD },                            \
-  { "no-rtd",                  -MASK_RTD },                            \
-  { "align-double",             MASK_ALIGN_DOUBLE },                   \
-  { "no-align-double",         -MASK_ALIGN_DOUBLE },                   \
-  { "svr3-shlib",               MASK_SVR3_SHLIB },                     \
-  { "no-svr3-shlib",           -MASK_SVR3_SHLIB },                     \
-  { "ieee-fp",                  MASK_IEEE_FP },                        \
-  { "no-ieee-fp",              -MASK_IEEE_FP },                        \
-  { "fp-ret-in-387",            MASK_FLOAT_RETURNS },                  \
-  { "no-fp-ret-in-387",                -MASK_FLOAT_RETURNS },                  \
-  { "no-fancy-math-387",        MASK_NO_FANCY_MATH_387 },              \
-  { "fancy-math-387",          -MASK_NO_FANCY_MATH_387 },              \
+{ { "80387",                    MASK_80387, "Use hardware fp" },       \
+  { "no-80387",                        -MASK_80387, "Do not use hardware fp" },\
+  { "hard-float",               MASK_80387, "Use hardware fp" },       \
+  { "soft-float",              -MASK_80387, "Do not use hardware fp" },\
+  { "no-soft-float",            MASK_80387, "Use hardware fp" },       \
+  { "386",                      0, "Optimize for i80386" },            \
+  { "no-386",                   0, "" },                               \
+  { "486",                      0, "Optimize for i80486" },            \
+  { "no-486",                   0, "" },                               \
+  { "pentium",                  0, "Optimize for Pentium" },           \
+  { "pentiumpro",               0, "Optimize for Pentium Pro, Pentium II" },\
+  { "rtd",                      MASK_RTD, "Alternate calling convention" },\
+  { "no-rtd",                  -MASK_RTD, "Use normal calling convention" },\
+  { "align-double",             MASK_ALIGN_DOUBLE, "Align doubles on dword boundary" },\
+  { "no-align-double",         -MASK_ALIGN_DOUBLE, "Align doubles on word boundary" },         \
+  { "svr3-shlib",               MASK_SVR3_SHLIB, "Uninitialized locals in .bss"  },                    \
+  { "no-svr3-shlib",           -MASK_SVR3_SHLIB, "Uninitialized locals in .data" },                    \
+  { "ieee-fp",                  MASK_IEEE_FP, "Use IEEE math for fp comparisons" },    \
+  { "no-ieee-fp",              -MASK_IEEE_FP, "Do not use IEEE math for fp comparisons" },                     \
+  { "fp-ret-in-387",            MASK_FLOAT_RETURNS, "Return values of functions in FPU registers" },                   \
+  { "no-fp-ret-in-387",                -MASK_FLOAT_RETURNS , "Do not return values of functions in FPU registers"},                    \
+  { "no-fancy-math-387",        MASK_NO_FANCY_MATH_387, "Do not generate sin, sos, sqrt for 387" },            \
+  { "fancy-math-387",          -MASK_NO_FANCY_MATH_387, "Generate sin, cos, sqrt for FPU"},            \
   { "omit-leaf-frame-pointer",  MASK_OMIT_LEAF_FRAME_POINTER },        \
   { "no-omit-leaf-frame-pointer",-MASK_OMIT_LEAF_FRAME_POINTER },       \
-  { "no-wide-multiply",                 MASK_NO_WIDE_MULTIPLY },               \
-  { "wide-multiply",           -MASK_NO_WIDE_MULTIPLY },               \
+  { "no-wide-multiply",                 MASK_NO_WIDE_MULTIPLY, "multiplies of 32 bits constrained to 32 bits" },               \
+  { "wide-multiply",           -MASK_NO_WIDE_MULTIPLY, "multiplies of 32 bits are 64 bits" },          \
   { "schedule-prologue",        MASK_SCHEDULE_PROLOGUE },              \
   { "no-schedule-prologue",    -MASK_SCHEDULE_PROLOGUE },              \
   { "debug-addr",               MASK_DEBUG_ADDR },                     \
@@ -260,13 +260,13 @@ extern int ix86_arch;
    option if the fixed part matches.  The actual option name is made
    by appending `-m' to the specified name.  */
 #define TARGET_OPTIONS                                                 \
-{ { "cpu=",            &ix86_cpu_string},                              \
-  { "arch=",           &ix86_arch_string},                             \
-  { "reg-alloc=",      &i386_reg_alloc_order },                        \
-  { "regparm=",                &i386_regparm_string },                         \
-  { "align-loops=",    &i386_align_loops_string },                     \
-  { "align-jumps=",    &i386_align_jumps_string },                     \
-  { "align-functions=",        &i386_align_funcs_string },                     \
+{ { "cpu=",            &ix86_cpu_string, "Schedule code for given CPU"}, \
+  { "arch=",           &ix86_arch_string, "Generate code for given CPU"}, \
+  { "reg-alloc=",      &i386_reg_alloc_order, "Control allocation order of integer registers" }, \
+  { "regparm=",                &i386_regparm_string, "Number of registers used to pass integer arguments" }, \
+  { "align-loops=",    &i386_align_loops_string, "Loop code aligned to this power of 2" }, \
+  { "align-jumps=",    &i386_align_jumps_string, "Jump targets are aligned to this power of 2" }, \
+  { "align-functions=",        &i386_align_funcs_string, "Function starts are aligned to this power of 2" }, \
   { "branch-cost=",    &i386_branch_cost_string },                     \
   SUBTARGET_OPTIONS                                                    \
 }