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| author | Jakub Jelinek <jakub@redhat.com> | 2010-09-24 16:37:02 +0200 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2010-09-24 16:37:02 +0200 |
| commit | 32990d5bc27147c3f6e53324b37089b104c864cc (patch) | |
| tree | 96c049e5b6aaaf1182db5e68e2f764aacc90ede6 /gcc/function.c | |
| parent | 3d1b7f135d4507cc748a09256d1e8c37e9222d80 (diff) | |
| download | gcc-32990d5bc27147c3f6e53324b37089b104c864cc.zip gcc-32990d5bc27147c3f6e53324b37089b104c864cc.tar.gz gcc-32990d5bc27147c3f6e53324b37089b104c864cc.tar.bz2 | |
re PR middle-end/45234 (ICE in expand_call, at calls.c:2845 when passing aligned function argument from unaligned stack after alloca)
PR middle-end/45234
* rtl.h (enum global_rtl_index): Add
GR_VIRTUAL_PREFERRED_STACK_BOUNDARY.
(LAST_VIRTUAL_POINTER_REGISTER): Define.
(virtual_preferred_stack_boundary_rtx,
VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM): Define.
(LAST_VIRTUAL_REGISTER): Increase by one.
(REGNO_PTR_FRAME_P): Use LAST_VIRTUAL_POINTER_REGISTER
instead of LAST_VIRTUAL_REGISTER.
* function.c (instantiate_new_reg): Handle
virtual_preferred_stack_boundary_rtx.
* emit-rtl.c (init_virtual_regs): Handle
VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM.
(init_emit_regs): Initialize virtual_preferred_stack_boundary_rtx.
* explow.c (round_push): If crtl->preferred_stack_boundary
is smaller than MAX_SUPPORTED_STACK_ALIGNMENT, use
virtual_preferred_stack_boundary_rtx alignment instead of
crtl->preferred_stack_boundary alignment.
(allocate_dynamic_stack_space): Use CONST_INT_P and REG_P
macros. Never decrease crtl->preferred_stack_boundary,
use crtl->preferred_stack_boundary or MAX_SUPPORTED_STACK_ALIGNMENT
instead of PREFERRED_STACK_BOUNDARY. Don't modify
stack_pointer_delta in dynamic allocation, even when size
is constant.
(probe_stack_range, anti_adjust_stack_and_probe): Use CONST_INT_P
macro.
* print-rtl.c (print_rtx): Handle
VIRTUAL_PREFERRED_STACK_BOUNDARY_REGNUM.
* config/alpha/alpha.h (NONSTRICT_REG_OK_FP_BASE_P): Use
LAST_VIRTUAL_POINTER_REGISTER instead of LAST_VIRTUAL_REGISTER.
* config/frv/frv.c (frv_emit_movsi): Likewise.
* config/arm/arm.c (thumb1_legitimate_address_p): Likewise.
* config/rs6000/rs6000.c (virtual_stack_registers_memory_p):
Likewise.
* gcc.dg/torture/stackalign/alloca-6.c: New test.
* gcc.target/i386/pr45234.c: New test.
Revert:
2010-09-17 H.J. Lu <hongjiu.lu@intel.com>
PR middle-end/45234
* calls.c (expand_call): Make sure that all variable sized
adjustments are multiple of preferred stack boundary after
stack alignment.
From-SVN: r164593
Diffstat (limited to 'gcc/function.c')
| -rw-r--r-- | gcc/function.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/function.c b/gcc/function.c index fac8b75..a11f248 100644 --- a/gcc/function.c +++ b/gcc/function.c @@ -1405,6 +1405,11 @@ instantiate_new_reg (rtx x, HOST_WIDE_INT *poffset) #endif offset = cfa_offset; } + else if (x == virtual_preferred_stack_boundary_rtx) + { + new_rtx = GEN_INT (crtl->preferred_stack_boundary / BITS_PER_UNIT); + offset = 0; + } else return NULL_RTX; |