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| author | Uros Bizjak <ubizjak@gmail.com> | 2023-11-24 16:11:27 +0100 |
|---|---|---|
| committer | Uros Bizjak <ubizjak@gmail.com> | 2023-11-24 16:11:27 +0100 |
| commit | 404ea4c1381398aee162415a88e5cb81c44f8c69 (patch) | |
| tree | 0d575db632c4000aea05bc0533a4e061e9ac4458 /gcc | |
| parent | 449b6b817ed76173e6475debd02b195ea9dab0a0 (diff) | |
| download | gcc-404ea4c1381398aee162415a88e5cb81c44f8c69.zip gcc-404ea4c1381398aee162415a88e5cb81c44f8c69.tar.gz gcc-404ea4c1381398aee162415a88e5cb81c44f8c69.tar.bz2 | |
i386: Fix ICE with -fsplit-stack -mcmodel=large [PR112686]
For -mcmodel=large, we have to load function address to a register.
PR target/112686
gcc/ChangeLog:
* config/i386/i386.cc (ix86_expand_split_stack_prologue): Load
function address to a register for ix86_cmodel == CM_LARGE.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr112686.c: New test.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/i386/i386.cc | 9 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.target/i386/pr112686.c | 5 |
2 files changed, 10 insertions, 4 deletions
diff --git a/gcc/config/i386/i386.cc b/gcc/config/i386/i386.cc index 7b92285..9390f52 100644 --- a/gcc/config/i386/i386.cc +++ b/gcc/config/i386/i386.cc @@ -10481,6 +10481,8 @@ ix86_expand_split_stack_prologue (void) SYMBOL_REF_FLAGS (split_stack_fn_large) |= SYMBOL_FLAG_LOCAL; } + fn = split_stack_fn_large; + if (ix86_cmodel == CM_LARGE_PIC) { rtx_code_label *label; @@ -10494,16 +10496,15 @@ ix86_expand_split_stack_prologue (void) emit_insn (gen_set_rip_rex64 (reg10, label)); emit_insn (gen_set_got_offset_rex64 (reg11, label)); emit_insn (gen_add2_insn (reg10, reg11)); - x = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, split_stack_fn_large), - UNSPEC_GOT); + x = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, fn), UNSPEC_GOT); x = gen_rtx_CONST (Pmode, x); emit_move_insn (reg11, x); x = gen_rtx_PLUS (Pmode, reg10, reg11); x = gen_const_mem (Pmode, x); fn = copy_to_suggested_reg (x, reg11, Pmode); } - else - fn = split_stack_fn_large; + else if (ix86_cmodel == CM_LARGE) + fn = copy_to_suggested_reg (fn, reg11, Pmode); /* When using the large model we need to load the address into a register, and we've run out of registers. So we diff --git a/gcc/testsuite/gcc.target/i386/pr112686.c b/gcc/testsuite/gcc.target/i386/pr112686.c new file mode 100644 index 0000000..858e91b --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr112686.c @@ -0,0 +1,5 @@ +/* PR target/112686 */ +/* { dg-do compile { target lp64 } } */ +/* { dg-options "-fsplit-stack -mcmodel=large" } */ + +void foo (void) {} |