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| author | Bernd Schmidt <bernds@redhat.com> | 2016-11-24 12:54:56 +0000 |
|---|---|---|
| committer | Bernd Schmidt <bernds@gcc.gnu.org> | 2016-11-24 12:54:56 +0000 |
| commit | 8cac4d85875ff23588908341fdd69fb4c39a7210 (patch) | |
| tree | 931322bd6dd2151c71ebdfbe6eb4426040b2f49b /gcc/varasm.c | |
| parent | eb2afa1a80613d37aa12fdd5a0624b45fdef9377 (diff) | |
| download | gcc-8cac4d85875ff23588908341fdd69fb4c39a7210.zip gcc-8cac4d85875ff23588908341fdd69fb4c39a7210.tar.gz gcc-8cac4d85875ff23588908341fdd69fb4c39a7210.tar.bz2 | |
common.opt (flimit-function-alignment): New.
gcc/
* common.opt (flimit-function-alignment): New.
* doc/invoke.texi (-flimit-function-alignment): Document.
* emit-rtl.h (struct rtl_data): Add max_insn_address field.
* final.c (shorten_branches): Set it.
* varasm.c (assemble_start_function): Limit alignment if
requested.
gcc/testsuite/
* gcc.target/i386/align-limit.c: New test.
From-SVN: r242836
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index 2a20f64..54e06acd 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -1791,9 +1791,14 @@ assemble_start_function (tree decl, const char *fnname) && align_functions_log > align && optimize_function_for_speed_p (cfun)) { + int align_log = align_functions_log; + int max_skip = align_functions - 1; + if (flag_limit_function_alignment && crtl->max_insn_address > 0 + && max_skip >= crtl->max_insn_address) + max_skip = crtl->max_insn_address - 1; + #ifdef ASM_OUTPUT_MAX_SKIP_ALIGN - ASM_OUTPUT_MAX_SKIP_ALIGN (asm_out_file, - align_functions_log, align_functions - 1); + ASM_OUTPUT_MAX_SKIP_ALIGN (asm_out_file, align_log, max_skip); #else ASM_OUTPUT_ALIGN (asm_out_file, align_functions_log); #endif |