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| author | Alan Modra <amodra@gmail.com> | 2014-06-06 10:34:22 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gcc.gnu.org> | 2014-06-06 10:34:22 +0930 |
| commit | ddbb449ffe5236c4968a73b2440a4aef0350564e (patch) | |
| tree | 23c342a3de8e01fa8b6546969fa6002664b39812 /gcc/function.c | |
| parent | 424ce7d729c3bdb240615b36052f75c6ac852943 (diff) | |
| download | gcc-ddbb449ffe5236c4968a73b2440a4aef0350564e.zip gcc-ddbb449ffe5236c4968a73b2440a4aef0350564e.tar.gz gcc-ddbb449ffe5236c4968a73b2440a4aef0350564e.tar.bz2 | |
re PR target/61300 (powerpc64le miscompile with K&R-style function definition at -O0)
PR target/61300
* doc/tm.texi.in (INCOMING_REG_PARM_STACK_SPACE): Document.
* doc/tm.texi: Regenerate.
* function.c (INCOMING_REG_PARM_STACK_SPACE): Provide default.
Use throughout in place of REG_PARM_STACK_SPACE.
* config/rs6000/rs6000.c (rs6000_reg_parm_stack_space): Add
"incoming" param. Pass to rs6000_function_parms_need_stack.
(rs6000_function_parms_need_stack): Add "incoming" param, ignore
prototype_p when incoming. Use function decl when incoming
to handle K&R style functions.
* config/rs6000/rs6000.h (REG_PARM_STACK_SPACE): Adjust.
(INCOMING_REG_PARM_STACK_SPACE): Define.
From-SVN: r211296
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/gcc/function.c b/gcc/function.c index 922f567..a85ad46 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -1348,9 +1348,13 @@ static int cfa_offset; #define STACK_POINTER_OFFSET 0 #endif +#if defined (REG_PARM_STACK_SPACE) && !defined (INCOMING_REG_PARM_STACK_SPACE) +#define INCOMING_REG_PARM_STACK_SPACE REG_PARM_STACK_SPACE +#endif + /* If not defined, pick an appropriate default for the offset of dynamically allocated memory depending on the value of ACCUMULATE_OUTGOING_ARGS, - REG_PARM_STACK_SPACE, and OUTGOING_REG_PARM_STACK_SPACE. */ + INCOMING_REG_PARM_STACK_SPACE, and OUTGOING_REG_PARM_STACK_SPACE. */ #ifndef STACK_DYNAMIC_OFFSET @@ -1362,12 +1366,12 @@ static int cfa_offset; `crtl->outgoing_args_size'. Nevertheless, we must allow for it when allocating stack dynamic objects. */ -#if defined(REG_PARM_STACK_SPACE) +#ifdef INCOMING_REG_PARM_STACK_SPACE #define STACK_DYNAMIC_OFFSET(FNDECL) \ ((ACCUMULATE_OUTGOING_ARGS \ ? (crtl->outgoing_args_size \ + (OUTGOING_REG_PARM_STACK_SPACE ((!(FNDECL) ? NULL_TREE : TREE_TYPE (FNDECL))) ? 0 \ - : REG_PARM_STACK_SPACE (FNDECL))) \ + : INCOMING_REG_PARM_STACK_SPACE (FNDECL))) \ : 0) + (STACK_POINTER_OFFSET)) #else #define STACK_DYNAMIC_OFFSET(FNDECL) \ @@ -2224,8 +2228,9 @@ assign_parms_initialize_all (struct assign_parm_data_all *all) #endif all->args_so_far = pack_cumulative_args (&all->args_so_far_v); -#ifdef REG_PARM_STACK_SPACE - all->reg_parm_stack_space = REG_PARM_STACK_SPACE (current_function_decl); +#ifdef INCOMING_REG_PARM_STACK_SPACE + all->reg_parm_stack_space + = INCOMING_REG_PARM_STACK_SPACE (current_function_decl); #endif } |