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| author | Nick Clifton <nickc@redhat.com> | 1998-01-29 00:29:37 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 1998-01-29 00:29:37 +0000 |
| commit | ed29580469374a53b995b74181b5c4f5fc9db516 (patch) | |
| tree | 3c4bb1b2a037bad5f21a296e1fc8e3b7a60114c0 /gas | |
| parent | 241b462435f038f9814d25e69974e712b8ad6548 (diff) | |
| download | gdb-ed29580469374a53b995b74181b5c4f5fc9db516.zip gdb-ed29580469374a53b995b74181b5c4f5fc9db516.tar.gz gdb-ed29580469374a53b995b74181b5c4f5fc9db516.tar.bz2 | |
Fix determination of when two instructions can be combined in parallel.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 7 | ||||
| -rw-r--r-- | gas/config/tc-m32r.c | 22 |
2 files changed, 17 insertions, 12 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index 2ea76a1..19559c4 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,10 @@ +start-sanitize-m32rx +Wed Jan 28 16:27:27 1998 Nick Clifton <nickc@cygnus.com> + + * config/tc-m32r.c (md_assemble): Fix determination of when + instructions can be combined in parallel. + +end-sanitize-m32rx Wed Jan 28 14:35:00 1998 Bill Moyer <billm@cygnus.com> * as.h (flag_warn_suppress_instructionswap): added new flag. diff --git a/gas/config/tc-m32r.c b/gas/config/tc-m32r.c index 1c79bfd..7232d4b 100644 --- a/gas/config/tc-m32r.c +++ b/gas/config/tc-m32r.c @@ -746,21 +746,19 @@ md_assemble (str) previous instruction to make one, parallel, 32 bit instruction. If the previous instruction (potentially) changed the flow of program control, then it cannot be combined with the current - instruction, otherwise call can_make_parallel() with both + instruction. Also if the output of the previous instruction + is used as an input to the current instruction then it cannot + be combined. Otherwise call can_make_parallel() with both orderings of the instructions to see if they can be combined. */ if ( ! CGEN_INSN_ATTR (prev_insn.insn, CGEN_INSN_COND_CTI) - && ! CGEN_INSN_ATTR (prev_insn.insn, CGEN_INSN_UNCOND_CTI)) + && ! CGEN_INSN_ATTR (prev_insn.insn, CGEN_INSN_UNCOND_CTI) + && check_parallel_io_clash (& prev_insn, &insn) + ) { - if (can_make_parallel (& prev_insn, & insn) == NULL - && check_parallel_io_clash (& prev_insn, &insn)) - { - make_parallel (insn.buffer); - } - else if (can_make_parallel (& insn, & prev_insn.insn) == NULL - && check_parallel_io_clash (& insn, & prev_insn)) - { - swap = true; - } + if (can_make_parallel (& prev_insn, & insn) == NULL) + make_parallel (insn.buffer); + else if (can_make_parallel (& insn, & prev_insn.insn) == NULL) + swap = true; } /* end-sanitize-phase2-m32rx */ /* end-sanitize-m32rx */ |