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| author | Richard Henderson <rth@redhat.com> | 2003-04-25 14:02:25 -0700 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2003-04-25 14:02:25 -0700 |
| commit | f5bdba44f05bbdb1e50842f7012b7aee701a0b5b (patch) | |
| tree | e54730d0349ad4ccd8f036c4f96eaadc5e2f4305 | |
| parent | 8f4e6cafdebdae2730db4650e5c97e19f21481b6 (diff) | |
| download | gcc-f5bdba44f05bbdb1e50842f7012b7aee701a0b5b.zip gcc-f5bdba44f05bbdb1e50842f7012b7aee701a0b5b.tar.gz gcc-f5bdba44f05bbdb1e50842f7012b7aee701a0b5b.tar.bz2 | |
ia64.c (ia64_compute_frame_size): Allow inline asm to clobber ar.pfs and ar.unat.
* config/ia64/ia64.c (ia64_compute_frame_size): Allow inline asm
to clobber ar.pfs and ar.unat.
(ia64_expand_prologue): Force alloc instruction if ar.pfs saved;
fix test for spilling ar.pfs to the stack.
From-SVN: r66074
| -rw-r--r-- | gcc/ChangeLog | 9 | ||||
| -rw-r--r-- | gcc/config/ia64/ia64.c | 24 |
2 files changed, 27 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2c378a8..db9496f 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,4 +1,11 @@ -2003-04-25 Richard Henderson <rth@redhat.com> +2003-04-25 Richard Henderson <rth@redhat.com> + + * config/ia64/ia64.c (ia64_compute_frame_size): Allow inline asm + to clobber ar.pfs and ar.unat. + (ia64_expand_prologue): Force alloc instruction if ar.pfs saved; + fix test for spilling ar.pfs to the stack. + +2003-04-25 Richard Henderson <rth@redhat.com> PR opt/10315 * config/rs6000/rs6000.c (rs6000_emit_move): Only elide proper diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c index 7eb3d2a..3fb27dd 100644 --- a/gcc/config/ia64/ia64.c +++ b/gcc/config/ia64/ia64.c @@ -1878,6 +1878,17 @@ ia64_compute_frame_size (size) spill_size += 8; n_spilled += 1; } + + if (regs_ever_live[AR_PFS_REGNUM]) + { + SET_HARD_REG_BIT (mask, AR_PFS_REGNUM); + current_frame_info.reg_save_ar_pfs = find_gr_spill (1); + if (current_frame_info.reg_save_ar_pfs == 0) + { + extra_spill_size += 8; + n_spilled += 1; + } + } } /* Unwind descriptor hackery: things are most efficient if we allocate @@ -1916,8 +1927,10 @@ ia64_compute_frame_size (size) } /* If we're forced to use st8.spill, we're forced to save and restore - ar.unat as well. */ - if (spilled_gr_p || cfun->machine->n_varargs) + ar.unat as well. The check for existing liveness allows inline asm + to touch ar.unat. */ + if (spilled_gr_p || cfun->machine->n_varargs + || regs_ever_live[AR_UNAT_REGNUM]) { regs_ever_live[AR_UNAT_REGNUM] = 1; SET_HARD_REG_BIT (mask, AR_UNAT_REGNUM); @@ -2378,7 +2391,8 @@ ia64_expand_prologue () /* We don't need an alloc instruction if we've used no outputs or locals. */ if (current_frame_info.n_local_regs == 0 && current_frame_info.n_output_regs == 0 - && current_frame_info.n_input_regs <= current_function_args_info.int_regs) + && current_frame_info.n_input_regs <= current_function_args_info.int_regs + && !TEST_HARD_REG_BIT (current_frame_info.mask, AR_PFS_REGNUM)) { /* If there is no alloc, but there are input registers used, then we need a .regstk directive. */ @@ -2540,8 +2554,8 @@ ia64_expand_prologue () /* The alloc insn already copied ar.pfs into a general register. The only thing we have to do now is copy that register to a stack slot if we'd not allocated a local register for the job. */ - if (current_frame_info.reg_save_ar_pfs == 0 - && ! current_function_is_leaf) + if (TEST_HARD_REG_BIT (current_frame_info.mask, AR_PFS_REGNUM) + && current_frame_info.reg_save_ar_pfs == 0) { reg = gen_rtx_REG (DImode, AR_PFS_REGNUM); do_spill (gen_movdi_x, ar_pfs_save_reg, cfa_off, reg); |