MatCat.OpenSource/8sa1-gcc
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

* i386.h (PREFERRED_STACK_BOUNDARY): Set to 128.

Browse Source 
From-SVN: r25973
This commit is contained in:
Richard Henderson 1999-03-25 02:06:56 -08:00 committed by Richard Henderson
parent 925a60f3e7
commit ab8cc6ab9f
2 changed files with 8 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
gcc/ChangeLog
View File

@ -1,3 +1,7 @@
Thu Mar 25 10:05:56 1999 Richard Henderson <rth@cygnus.com>
* i386.h (PREFERRED_STACK_BOUNDARY): Set to 128.
1999-03-25 Philip Blundell <pb@nexus.co.uk>
Based on patch from Jim Studt <jim@federated.com>:

7
gcc/config/i386/i386.h
View File

@ -410,9 +410,10 @@ extern int ix86_arch;
/* Boundary (in *bits*) on which stack pointer should be aligned. */
#define STACK_BOUNDARY 32
/* We want to keep the stack aligned to 64bits when possible. But the
compiler can not rely on the stack having this alignment.*/
#define PREFERRED_STACK_BOUNDARY 64
/* We want to keep the stack aligned to 128 bits when possible, for the
benefit of doubles and SSE __m128. But the compiler can not rely on
the stack having this alignment.*/
#define PREFERRED_STACK_BOUNDARY 128
/* Allocation boundary (in *bits*) for the code of a function.
For i486, we get better performance by aligning to a cache