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(STACK_BOUNDARY): Determine according to TARGET_ALIGN_DOUBLE

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From-SVN: r13738
This commit is contained in:
Stan Cox 1997-03-18 22:01:28 +00:00
parent 03fc162077
commit 33c1d53aec
1 changed files with 23 additions and 4 deletions
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27
gcc/config/i386/i386.h
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@ -79,8 +79,8 @@ extern int target_flags;
/* Masks for the -m switches */
#define MASK_80387 000000000001 /* Hardware floating point */
#define MASK_486 000000000002 /* 80486 specific */
#define MASK_NOTUSED1 000000000004 /* bit not currently used */
#define MASK_NOTUSED1 000000000002 /* bit not currently used */
#define MASK_NOTUSED2 000000000004 /* bit not currently used */
#define MASK_RTD 000000000010 /* Use ret that pops args */
#define MASK_ALIGN_DOUBLE 000000000020 /* align doubles to 2 word boundary */
#define MASK_SVR3_SHLIB 000000000040 /* Uninit locals into bss */
@ -303,12 +303,31 @@ extern int ix86_arch;
#endif
#ifndef CPP_CPU_SPEC
#ifdef __STDC__
#if TARGET_CPU_DEFAULT == 0
#define CPP_CPU_DEFAULT ""
#elif TARGET_CPU_DEFAULT == 1
#define CPP_CPU_DEFAULT "-Di486"
#elif TARGET_CPU_DEFAULT == 2
#define CPP_CPU_DEFAULT "-Di586"
#elif TARGET_CPU_DEFAULT == 3
#define CPP_CPU_DEFAULT "-Di686"
#endif /* TARGET_CPU_DEFAULT */
#define CPP_CPU_SPEC "\
-Di386 " CPP_CPU_DEFAULT " -Asystem(unix) -Acpu(i386) -Amachine(i386) \
%{mcpu=i486:-Di486} %{m486:-Di486} \
%{mpentium:-Dpentium -Di586} %{mcpu=pentium:-Dpentium -Di586} \
%{mpentiumpro:-Dpentiumpro -Di686} %{mcpu=pentiumpro:-Dpentiumpro -Di686}"
#else
#define CPP_CPU_SPEC "\
-Di386 -Asystem(unix) -Acpu(i386) -Amachine(i386) \
%{mcpu=i486:-Di486} %{m486:-Di486} \
%{mpentium:-Dpentium -Di586} %{mcpu=pentium:-Dpentium -Di586} \
%{mpentiumpro:-Dpentiumpro -Di686} %{mcpu=pentiumpro:-Dpentiumpro -Di686}"
#endif
#endif /* __STDC__ */
#endif /* CPP_CPU_SPEC */
/* This macro defines names of additional specifications to put in the specs
that can be used in various specifications like CC1_SPEC. Its definition
@ -373,7 +392,7 @@ extern int ix86_arch;
#define PARM_BOUNDARY 32
/* Boundary (in *bits*) on which stack pointer should be aligned. */
#define STACK_BOUNDARY 32
#define STACK_BOUNDARY (TARGET_ALIGN_DOUBLE ? 64 : 32)
/* Allocation boundary (in *bits*) for the code of a function.
For i486, we get better performance by aligning to a cache