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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
may be accessed via the stack pointer) in functions that seem suitable.
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. */
extern int leaf_function;
Being a non-leaf function does not mean a frame pointer is needed in the
flat window model. However, the debugger won't be able to backtrace through
us with out it. */
#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 ()))
/* 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 this is made in regclass.c. */
extern int leaf_function;
#define FUNCTION_PROLOGUE(FILE, SIZE) \
(TARGET_FRW ? sparc_flat_output_function_prologue (FILE, SIZE) \
: output_function_prologue (FILE, SIZE, leaf_function))