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| author | Uros Bizjak <ubizjak@gmail.com> | 2009-08-21 08:01:23 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2009-08-21 08:01:23 +0200 |
| commit | 7450a081dba0e01ad1097e8d4798fe59f91ecead (patch) | |
| tree | ad81ecce6e9486fcfb0ac5437f5ec61bb4ecb80a | |
| parent | 685dca122f12d675ab63e927ce0947531ce27959 (diff) | |
| download | gcc-7450a081dba0e01ad1097e8d4798fe59f91ecead.zip gcc-7450a081dba0e01ad1097e8d4798fe59f91ecead.tar.gz gcc-7450a081dba0e01ad1097e8d4798fe59f91ecead.tar.bz2 | |
alpha.md (exception_receiver): Emit alternative GP load sequence if flag_reorder_blocks_and_partition is set.
* config/alpha/alpha.md (exception_receiver): Emit alternative
GP load sequence if flag_reorder_blocks_and_partition is set.
(*exception_receiver_2): Also enable when
flag_reorder_blocks_and_partition is set.
From-SVN: r150984
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/config/alpha/alpha.md | 12 |
2 files changed, 17 insertions, 2 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c0d98c1..225e96e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2009-08-21 Uros Bizjak <ubizjak@gmail.com> + + * config/alpha/alpha.md (exception_receiver): Emit alternative + GP load sequence if flag_reorder_blocks_and_partition is set. + (*exception_receiver_2): Also enable when + flag_reorder_blocks_and_partition is set. + 2009-08-20 Matt Rice <ratmice@gmail.com> Diego Novillo <dnovillo@google.com> diff --git a/gcc/config/alpha/alpha.md b/gcc/config/alpha/alpha.md index 18817c8..67ccff5 100644 --- a/gcc/config/alpha/alpha.md +++ b/gcc/config/alpha/alpha.md @@ -6855,11 +6855,18 @@ "br $27,$LSJ%=\n$LSJ%=:" [(set_attr "type" "ibr")]) +;; When flag_reorder_blocks_and_partition is in effect, compiler puts +;; exception landing pads in a cold section. To prevent inter-section offset +;; calculation, a jump to original landing pad is emitted in the place of the +;; original landing pad. Since landing pad is moved, RA-relative GP +;; calculation in the prologue of landing pad breaks. To solve this problem, +;; we use alternative GP load approach, as in the case of TARGET_LD_BUGGY_LDGP. + (define_expand "exception_receiver" [(unspec_volatile [(match_dup 0)] UNSPECV_EHR)] "TARGET_ABI_OSF" { - if (TARGET_LD_BUGGY_LDGP) + if (TARGET_LD_BUGGY_LDGP || flag_reorder_blocks_and_partition) operands[0] = alpha_gp_save_rtx (); else operands[0] = const0_rtx; @@ -6867,7 +6874,8 @@ (define_insn "*exception_receiver_2" [(unspec_volatile [(match_operand:DI 0 "memory_operand" "m")] UNSPECV_EHR)] - "TARGET_ABI_OSF && TARGET_LD_BUGGY_LDGP" + "TARGET_ABI_OSF + && (TARGET_LD_BUGGY_LDGP || flag_reorder_blocks_and_partition)" "ldq $29,%0" [(set_attr "type" "ild")]) |