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| author | Richard Kenner <kenner@gcc.gnu.org> | 1995-04-25 19:08:04 -0400 |
|---|---|---|
| committer | Richard Kenner <kenner@gcc.gnu.org> | 1995-04-25 19:08:04 -0400 |
| commit | 9dc0f531444e86626bd6ede1d14aa8d0131eca1c (patch) | |
| tree | afb8ea145169e217b85ed4f490c21e79a0f28052 | |
| parent | 7d41fad55b1a03b074680a6b2045d844c8fe2ece (diff) | |
| download | gcc-9dc0f531444e86626bd6ede1d14aa8d0131eca1c.zip gcc-9dc0f531444e86626bd6ede1d14aa8d0131eca1c.tar.gz gcc-9dc0f531444e86626bd6ede1d14aa8d0131eca1c.tar.bz2 | |
(assign_parms): If STACK_REGS is defined...
(assign_parms): If STACK_REGS is defined, generate USE insns before
the function body, thus showing which registers are filled with
parameters.
From-SVN: r9461
| -rw-r--r-- | gcc/function.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/gcc/function.c b/gcc/function.c index 48bcc9f..6a936ff 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -3497,6 +3497,17 @@ assign_parms (fndecl, second_time) } #endif /* 0 */ +#ifdef STACK_REGS + /* We need this "use" info, because the gcc-register->stack-register + converter in reg-stack.c needs to know which registers are active + at the start of the function call. The actual parameter loading + instructions are not always available then anymore, since they might + have been optimised away. */ + + if (GET_CODE (entry_parm) == REG && !(hide_last_arg && last_named)) + emit_insn (gen_rtx (USE, GET_MODE (entry_parm), entry_parm)); +#endif + /* ENTRY_PARM is an RTX for the parameter as it arrives, in the mode in which it arrives. STACK_PARM is an RTX for a stack slot where the parameter can live |