diff options
| author | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-01-15 12:43:35 +0000 |
|---|---|---|
| committer | hubicka <hubicka@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-01-15 12:43:35 +0000 |
| commit | 25bf8ba363ef7ca3f91fce7433d46b5399562b01 (patch) | |
| tree | 6deb389e7c733b4c85650e832ec219085b0ff935 /gcc/global.c | |
| parent | aa816fb8e73f24a9914a7e42fb49aa2fcaeea602 (diff) | |
| download | gcc-25bf8ba363ef7ca3f91fce7433d46b5399562b01.tar.gz | |
PR f/9258
* global.c (struct allocno): Add no_stack_reg.
(global_conflicts): Set no_stack_reg.
(find_reg): Use it.
* convert.c (convert_to_real): Fold - and abs only when profitable.
* fold-const.c (fold): Fold truncates in - and abs.
* gcc.c-torture/compile/20030115-1.c: New test.
* gcc.dg/i386-fpcvt-1.c: New test.
* gcc.dg/i386-fpcvt-2.c: New test.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@61329 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/global.c')
| -rw-r--r-- | gcc/global.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/gcc/global.c b/gcc/global.c index 3b2334fcbf6..4fadc144462 100644 --- a/gcc/global.c +++ b/gcc/global.c @@ -132,6 +132,11 @@ struct allocno /* Set of hard registers that some later allocno has a preference for. */ HARD_REG_SET regs_someone_prefers; + +#ifdef STACK_REGS + /* Set to true if allocno can't be allocated in the stack register. */ + bool no_stack_reg; +#endif }; static struct allocno *allocno; @@ -708,8 +713,14 @@ global_conflicts () if (e->flags & EDGE_ABNORMAL) break; if (e != NULL) - for (ax = FIRST_STACK_REG; ax <= LAST_STACK_REG; ax++) - record_one_conflict (ax); + { + EXECUTE_IF_SET_IN_ALLOCNO_SET (allocnos_live, ax, + { + allocno[ax].no_stack_reg = 1; + }); + for (ax = FIRST_STACK_REG; ax <= LAST_STACK_REG; ax++) + record_one_conflict (ax); + } } #endif } @@ -1206,6 +1217,10 @@ find_reg (num, losers, alt_regs_p, accept_call_clobbered, retrying) && ! invalid_mode_change_p (regno, REGNO_REG_CLASS (regno), mode) #endif +#ifdef STACK_REGS + && (!allocno[num].no_stack_reg + || regno < FIRST_STACK_REG || regno > LAST_STACK_REG) +#endif ) { /* We explicitly evaluate the divide results into temporary |