diff options
| author | Chung-Ju Wu <jasonwucj@gmail.com> | 2018-08-12 13:41:22 +0000 |
|---|---|---|
| committer | Chung-Ju Wu <jasonwucj@gcc.gnu.org> | 2018-08-12 13:41:22 +0000 |
| commit | d057a470d3bbf617b86f0010cae9cb1741661918 (patch) | |
| tree | 16cdd65673f7db27b38450ee4e12dc842d31a2d8 | |
| parent | 68acadb1ff292f5f62cdeb5a17dcb92613087727 (diff) | |
| download | gcc-d057a470d3bbf617b86f0010cae9cb1741661918.zip gcc-d057a470d3bbf617b86f0010cae9cb1741661918.tar.gz gcc-d057a470d3bbf617b86f0010cae9cb1741661918.tar.bz2 | |
[NDS32] Add new option: -msched-prolog-epilog
gcc/
* config/nds32/nds32.c (nds32_expand_prologue, nds32_expand_epilogue):
Support -msched-prolog-epilog option.
* config/nds32/nds32.opt (msched-prolog-epilog): New option.
From-SVN: r263496
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32.c | 16 | ||||
| -rw-r--r-- | gcc/config/nds32/nds32.opt | 4 |
3 files changed, 20 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 59f48ee..02f007b 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2018-08-12 Chung-Ju Wu <jasonwucj@gmail.com> + * config/nds32/nds32.c (nds32_expand_prologue, nds32_expand_epilogue): + Support -msched-prolog-epilog option. + * config/nds32/nds32.opt (msched-prolog-epilog): New option. + +2018-08-12 Chung-Ju Wu <jasonwucj@gmail.com> + * common/config/nds32/nds32-common.c (nds32_option_optimization_table): Enalbe -malways-align. diff --git a/gcc/config/nds32/nds32.c b/gcc/config/nds32/nds32.c index f68341e..d58be37 100644 --- a/gcc/config/nds32/nds32.c +++ b/gcc/config/nds32/nds32.c @@ -4763,9 +4763,11 @@ nds32_expand_prologue (void) if (flag_pic && df_regs_ever_live_p (PIC_OFFSET_TABLE_REGNUM)) nds32_emit_load_gp (); - /* Prevent the instruction scheduler from - moving instructions across the boundary. */ - emit_insn (gen_blockage ()); + /* If user applies -mno-sched-prolog-epilog option, + we need to prevent instructions of function body from being + scheduled with stack adjustment in prologue. */ + if (!flag_sched_prolog_epilog) + emit_insn (gen_blockage ()); } /* Function for normal multiple pop epilogue. */ @@ -4779,9 +4781,11 @@ nds32_expand_epilogue (bool sibcall_p) The result will be in cfun->machine. */ nds32_compute_stack_frame (); - /* Prevent the instruction scheduler from - moving instructions across the boundary. */ - emit_insn (gen_blockage ()); + /* If user applies -mno-sched-prolog-epilog option, + we need to prevent instructions of function body from being + scheduled with stack adjustment in epilogue. */ + if (!flag_sched_prolog_epilog) + emit_insn (gen_blockage ()); /* If the function is 'naked', we do not have to generate epilogue code fragment BUT 'ret' instruction. diff --git a/gcc/config/nds32/nds32.opt b/gcc/config/nds32/nds32.opt index d73f5af..0e50c99 100644 --- a/gcc/config/nds32/nds32.opt +++ b/gcc/config/nds32/nds32.opt @@ -444,6 +444,10 @@ mforce-no-ext-dsp Target Undocumented Report Mask(FORCE_NO_EXT_DSP) Force disable hardware loop, even use -mext-dsp. +msched-prolog-epilog +Target Var(flag_sched_prolog_epilog) Init(0) +Permit scheduling of a function's prologue and epilogue sequence. + mret-in-naked-func Target Var(flag_ret_in_naked_func) Init(1) Generate return instruction in naked function. |