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(FRAME_POINTER_REQUIRED): Require frame pointer if

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non-leaf flat function.

From-SVN: r8309
This commit is contained in:
Doug Evans 1994-10-19 00:25:57 +00:00
parent af432130ae
commit a061b9fa1b
1 changed files with 7 additions and 4 deletions
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11
gcc/config/sparc/sparc.h
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@ -710,12 +710,14 @@ extern int sparc_mode_class[];
Zero means the frame pointer need not be set up (and parms Zero means the frame pointer need not be set up (and parms
may be accessed via the stack pointer) in functions that seem suitable. may be accessed via the stack pointer) in functions that seem suitable.
This is computed in `reload', in reload1.c. This is computed in `reload', in reload1.c.
Used in flow.c, global.c, and reload1.c.
Used in flow.c, global.c, and reload1.c. */ Being a non-leaf function does not mean a frame pointer is needed in the
extern int leaf_function; flat window model. However, the debugger won't be able to backtrace through
us with out it. */
#define FRAME_POINTER_REQUIRED \ #define FRAME_POINTER_REQUIRED \
(TARGET_FRW ? (current_function_calls_alloca || current_function_varargs) \ (TARGET_FRW ? (current_function_calls_alloca || current_function_varargs \
|| !leaf_function_p ()) \
: ! (leaf_function_p () && only_leaf_regs_used ())) : ! (leaf_function_p () && only_leaf_regs_used ()))
/* C statement to store the difference between the frame pointer /* C statement to store the difference between the frame pointer
@ -1515,6 +1517,7 @@ do { \
to do a "save" insn. The decision about whether or not to do a "save" insn. The decision about whether or not
to do this is made in regclass.c. */ to do this is made in regclass.c. */
extern int leaf_function;
#define FUNCTION_PROLOGUE(FILE, SIZE) \ #define FUNCTION_PROLOGUE(FILE, SIZE) \
(TARGET_FRW ? sparc_flat_output_function_prologue (FILE, SIZE) \ (TARGET_FRW ? sparc_flat_output_function_prologue (FILE, SIZE) \
: output_function_prologue (FILE, SIZE, leaf_function)) : output_function_prologue (FILE, SIZE, leaf_function))