diff options
| author |   miod <miod@openbsd.org> | 2013-01-02 22:16:16 +0000 |
|---|---|---|
| committer | miod <miod@openbsd.org> | 2013-01-02 22:16:16 +0000 |
| commit | f5c6f4e7e4cc5b271a76de52dae4b84aad54d110 (patch) | |
| tree | 3c53f017af99c5a41c1db518dd98c9b768872c27 | |
| parent | Remove last boolean argumont of output_function_profiler(), it is always invoked (diff) | |
| download | wireguard-openbsd-f5c6f4e7e4cc5b271a76de52dae4b84aad54d110.tar.xz wireguard-openbsd-f5c6f4e7e4cc5b271a76de52dae4b84aad54d110.zip | |
Help the DWARF code to handle our prologues correctly:
- add the frame pointer to EPILOGUE_USES when profiling
- when the initial stack adjustement is larger than 64KB and requires a
temporary register to be used, add a REG_FRAME_RELATED_EXPR of the original
computation (not constrained by the adjustement size) to the REG_NOTES of
the stack pointer adjustement sequence. Borrowed from alpha which has a
similar issue.
| -rw-r--r-- | gnu/usr.bin/gcc/gcc/config/m88k/m88k.c | 10 | ||||
| -rw-r--r-- | gnu/usr.bin/gcc/gcc/config/m88k/m88k.h | 6 |
2 files changed, 14 insertions, 2 deletions
diff --git a/gnu/usr.bin/gcc/gcc/config/m88k/m88k.c b/gnu/usr.bin/gcc/gcc/config/m88k/m88k.c index da78aed7ca9..7701a393baf 100644 --- a/gnu/usr.bin/gcc/gcc/config/m88k/m88k.c +++ b/gnu/usr.bin/gcc/gcc/config/m88k/m88k.c @@ -1921,6 +1921,16 @@ m88k_expand_prologue () { insn = emit_add (stack_pointer_rtx, stack_pointer_rtx, -m88k_stack_size); RTX_FRAME_RELATED_P (insn) = 1; + + /* If the stack pointer adjustment has required a temporary register, + tell the DWARF code how to understand this sequence. */ + if (! SMALL_INTVAL (m88k_stack_size)) + REG_NOTES (insn) + = gen_rtx_EXPR_LIST (REG_FRAME_RELATED_EXPR, + gen_rtx_SET (VOIDmode, stack_pointer_rtx, + gen_rtx_PLUS (Pmode, stack_pointer_rtx, + GEN_INT (-m88k_stack_size))), + REG_NOTES(insn)); } if (nregs || nxregs) diff --git a/gnu/usr.bin/gcc/gcc/config/m88k/m88k.h b/gnu/usr.bin/gcc/gcc/config/m88k/m88k.h index fd4a8808832..2df19f0b144 100644 --- a/gnu/usr.bin/gcc/gcc/config/m88k/m88k.h +++ b/gnu/usr.bin/gcc/gcc/config/m88k/m88k.h @@ -964,9 +964,11 @@ enum reg_class { NO_REGS, AP_REG, XRF_REGS, GENERAL_REGS, AGRF_REGS, || !TARGET_OMIT_LEAF_FRAME_POINTER) \ || (write_symbols != NO_DEBUG)) - /* Define registers used by the epilogue and return instruction. */ -#define EPILOGUE_USES(REGNO) (reload_completed && (REGNO) == 1) +#define EPILOGUE_USES(REGNO) \ +(reload_completed && ((REGNO) == 1 \ + || (current_function_profile \ + && (REGNO) == FRAME_POINTER_REGNUM))) /* Before the prologue, RA is in r1. */ #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, 1) |