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| author | Charles Hannum <mycroft@gnu.org> | 1992-07-06 21:48:21 +0000 |
|---|---|---|
| committer | Charles Hannum <mycroft@gnu.org> | 1992-07-06 21:48:21 +0000 |
| commit | 95393dfdf89145c8cc8224c1c2e1782ce2d8273c (patch) | |
| tree | 8f2ed1cdc517608a7876eac66f18bb930ef17afe | |
| parent | 9b4e97b0d01f1ddae5bbbace17eed0e9812f5b6b (diff) | |
| download | gcc-95393dfdf89145c8cc8224c1c2e1782ce2d8273c.zip gcc-95393dfdf89145c8cc8224c1c2e1782ce2d8273c.tar.gz gcc-95393dfdf89145c8cc8224c1c2e1782ce2d8273c.tar.bz2 | |
entered into RCS
From-SVN: r1481
| -rw-r--r-- | gcc/config/i386/i386.h | 19 | ||||
| -rw-r--r-- | gcc/config/i386/i386.md | 12 |
2 files changed, 31 insertions, 0 deletions
diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h index 847cf3e..a03b582 100644 --- a/gcc/config/i386/i386.h +++ b/gcc/config/i386/i386.h @@ -37,6 +37,20 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */ #define I386 1 +/* Stubs for half-pic support if not OSF/1 reference platform. */ + +#ifndef HALF_PIC_P +#define HALF_PIC_P() 0 +#define HALF_PIC_NUMBER_PTRS 0 +#define HALF_PIC_NUMBER_REFS 0 +#define HALF_PIC_ENCODE(DECL) +#define HALF_PIC_DECLARE(NAME) +#define HALF_PIC_INIT() error ("half-pic init called on systems that don't support it.") +#define HALF_PIC_ADDRESS_P(X) 0 +#define HALF_PIC_PTR(X) X +#define HALF_PIC_FINISH(STREAM) +#endif + /* Run-time compilation parameters selecting different hardware subsets. */ extern int target_flags; @@ -86,7 +100,12 @@ extern int target_flags; { "nosvr3-shlib", -040}, \ { "ieee-fp", 0100}, \ { "noieee-fp", -0100}, \ + SUBTARGET_SWITCHES \ { "", TARGET_DEFAULT}} + +/* This is meant to be redefined in the host dependent files */ +#define SUBTARGET_SWITCHES + /* target machine storage layout */ diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md index 9ce6c33..ee7268b 100644 --- a/gcc/config/i386/i386.md +++ b/gcc/config/i386/i386.md @@ -572,6 +572,18 @@ if (flag_pic && SYMBOLIC_CONST (operands[1])) emit_pic_move (operands, SImode); + else if (HALF_PIC_P() + && GET_CODE (operands[0]) == REG + && GET_CODE (operands[1]) == SYMBOL_REF + && HALF_PIC_ADDRESS_P (operands[1])) + { + rtx ptr = HALF_PIC_PTR (operands[1]); + if (XSTR (ptr, 0) != XSTR (operands[1], 0)) + { + emit_move_insn (operands[0], gen_rtx (MEM, Pmode, ptr)); + DONE; + } + } }") ;; On i486, incl reg is faster than movl $1,reg. |