diff options
Diffstat (limited to 'gcc/config/i386/i386.c')
| -rw-r--r-- | gcc/config/i386/i386.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c index 55e1e2d..01a1cb9 100644 --- a/gcc/config/i386/i386.c +++ b/gcc/config/i386/i386.c @@ -11495,6 +11495,7 @@ ix86_expand_prologue (void) HOST_WIDE_INT allocate; bool int_registers_saved; bool sse_registers_saved; + rtx static_chain = NULL_RTX; ix86_finalize_stack_realign_flags (); @@ -11593,7 +11594,8 @@ ix86_expand_prologue (void) call. This insn will be skipped by the trampoline. */ else if (ix86_static_chain_on_stack) { - insn = emit_insn (gen_push (ix86_static_chain (cfun->decl, false))); + static_chain = ix86_static_chain (cfun->decl, false); + insn = emit_insn (gen_push (static_chain)); emit_insn (gen_blockage ()); /* We don't want to interpret this push insn as a register save, @@ -11645,6 +11647,15 @@ ix86_expand_prologue (void) we've started over with a new frame. */ m->fs.sp_offset = INCOMING_FRAME_SP_OFFSET; m->fs.realigned = true; + + if (static_chain) + { + /* Replicate static chain on the stack so that static chain + can be reached via (argp - 2) slot. This is needed for + nested function with stack realignment. */ + insn = emit_insn (gen_push (static_chain)); + RTX_FRAME_RELATED_P (insn) = 1; + } } int_registers_saved = (frame.nregs == 0); |