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| author | Doug Evans <dje@gnu.org> | 1994-10-19 00:25:57 +0000 |
|---|---|---|
| committer | Doug Evans <dje@gnu.org> | 1994-10-19 00:25:57 +0000 |
| commit | a061b9fa1ba5fa26292f074194e5f9cd30e744b1 (patch) | |
| tree | 6be33fbdb133d4228e1da667b1a2e2260cc8693b | |
| parent | af432130ae43aa872d977e6bda6a9fbe8c83b149 (diff) | |
| download | gcc-a061b9fa1ba5fa26292f074194e5f9cd30e744b1.zip gcc-a061b9fa1ba5fa26292f074194e5f9cd30e744b1.tar.gz gcc-a061b9fa1ba5fa26292f074194e5f9cd30e744b1.tar.bz2 | |
(FRAME_POINTER_REQUIRED): Require frame pointer if
non-leaf flat function.
From-SVN: r8309
| -rw-r--r-- | gcc/config/sparc/sparc.h | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/gcc/config/sparc/sparc.h b/gcc/config/sparc/sparc.h index 03d9b5c..b5f7d34 100644 --- a/gcc/config/sparc/sparc.h +++ b/gcc/config/sparc/sparc.h @@ -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)) |