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| author | John Wehle <john@feith.com> | 1999-04-18 13:09:37 +0000 |
|---|---|---|
| committer | John Wehle <wehle@gcc.gnu.org> | 1999-04-18 13:09:37 +0000 |
| commit | 54ff41b717adbdea60052aaf1ae686b518acbffb (patch) | |
| tree | 266e9b6a151a15a5ac1a49e1ec8038fde7907520 /gcc/function.c | |
| parent | fbdd0024110fbdc960e21862e5df7bd2e508afc9 (diff) | |
| download | gcc-54ff41b717adbdea60052aaf1ae686b518acbffb.zip gcc-54ff41b717adbdea60052aaf1ae686b518acbffb.tar.gz gcc-54ff41b717adbdea60052aaf1ae686b518acbffb.tar.bz2 | |
output.h (current_function_is_leaf, [...]): Declare.
* output.h (current_function_is_leaf,
current_function_uses_only_leaf_regs): Declare.
* function.c (current_function_is_leaf,
current_function_uses_only_leaf_regs): Define.
(init_function_start): Initialize current_function_is_leaf
and current_function_uses_only_leaf_regs.
* final.c (leaf_function): Don't define.
(final_start_function): Replace uses of leaf_function with
current_function_uses_only_leaf_regs.
* toplev.c (rest_of_compilation): Set current_function_is_leaf
prior to invoking local register allocation.
(rest_of_compilation): Replace uses of leaf_function with
current_function_uses_only_leaf_regs.
* dbxout.c (dbxout_symbol, dbxout_parms): Likewise.
* dwarf2out.c (add_location_or_const_vaule_attribute): Likewise.
* dwarfout.c (add_location_or_const_value_attribute): Likewise.
* sdbout.c (sdbout_symbol): Likewise.
* sparc.h (FUNCTION_PROLOGUE, FUNCTION_EPILOGUE): Likewise.
* sparc.c (eligible_for_epilogue_delay, output_return,
sparc_return_peephole_ok): Likewise.
* sparc.md (leaf_function attribute, untyped_return): Likewise.
* i386.c (ix86_compute_frame_size): Don't align the stack
for leaf functions which don't allocate any stack slots.
* tm.texi: Update documentation.
From-SVN: r26538
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/gcc/function.c b/gcc/function.c index ac55f3a..3035786 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -140,12 +140,25 @@ int current_function_has_nonlocal_goto; int current_function_contains_functions; +/* Nonzero if function being compiled doesn't contain any calls + (ignoring the prologue and epilogue). This is set prior to + local register allocation and is valid for the remaining + compiler passes. */ + +int current_function_is_leaf; + /* Nonzero if function being compiled doesn't modify the stack pointer (ignoring the prologue and epilogue). This is only valid after life_analysis has run. */ int current_function_sp_is_unchanging; +/* Nonzero if the function being compiled is a leaf function which only + uses leaf registers. This is valid after reload (specifically after + sched2) and is useful only if the port defines LEAF_REGISTERS. */ + +int current_function_uses_only_leaf_regs; + /* Nonzero if the function being compiled issues a computed jump. */ int current_function_has_computed_jump; @@ -5897,7 +5910,9 @@ init_function_start (subr, filename, line) current_function_has_nonlocal_label = 0; current_function_has_nonlocal_goto = 0; current_function_contains_functions = 0; + current_function_is_leaf = 0; current_function_sp_is_unchanging = 0; + current_function_uses_only_leaf_regs = 0; current_function_has_computed_jump = 0; current_function_is_thunk = 0; |