diff options
Diffstat (limited to 'gcc/dwarf2out.c')
| -rw-r--r-- | gcc/dwarf2out.c | 26 |
1 files changed, 25 insertions, 1 deletions
diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index d780914..314652b 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -1271,6 +1271,30 @@ clobbers_queued_reg_save (rtx insn) return false; } +/* Entry point for saving the first register into the second. */ + +void +dwarf2out_reg_save_reg (const char *label, rtx reg, rtx sreg) +{ + size_t i; + unsigned int regno, sregno; + + for (i = 0; i < num_regs_saved_in_regs; i++) + if (REGNO (regs_saved_in_regs[i].orig_reg) == REGNO (reg)) + break; + if (i == num_regs_saved_in_regs) + { + gcc_assert (i != ARRAY_SIZE (regs_saved_in_regs)); + num_regs_saved_in_regs++; + } + regs_saved_in_regs[i].orig_reg = reg; + regs_saved_in_regs[i].saved_in_reg = sreg; + + regno = DWARF_FRAME_REGNUM (REGNO (reg)); + sregno = DWARF_FRAME_REGNUM (REGNO (sreg)); + reg_save (label, regno, sregno, 0); +} + /* What register, if any, is currently saved in REG? */ static rtx @@ -1659,7 +1683,7 @@ dwarf2out_frame_debug_expr (rtx expr, const char *label) case UNSPEC_VOLATILE: gcc_assert (targetm.dwarf_handle_frame_unspec); targetm.dwarf_handle_frame_unspec (label, expr, XINT (src, 1)); - break; + return; default: gcc_unreachable (); |