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| author | Uros Bizjak <ubizjak@gmail.com> | 2015-07-15 09:39:30 +0200 |
|---|---|---|
| committer | Uros Bizjak <uros@gcc.gnu.org> | 2015-07-15 09:39:30 +0200 |
| commit | ac4ee457756c19ef2f0f10d49686de8c30ef9d88 (patch) | |
| tree | 93404c2111747f460750cfb0b2b6d9d2e7515cf5 /gcc | |
| parent | 7a708f68bfb52c2986e2ef39bfa40a7bb3fbb51e (diff) | |
| download | gcc-ac4ee457756c19ef2f0f10d49686de8c30ef9d88.zip gcc-ac4ee457756c19ef2f0f10d49686de8c30ef9d88.tar.gz gcc-ac4ee457756c19ef2f0f10d49686de8c30ef9d88.tar.bz2 | |
re PR target/58066 (__tls_get_addr is called with misaligned stack on x86-64)
PR rtl-optimization/58066
* calls.c (expand_call): Precompute register parameters before stack
alignment is performed.
From-SVN: r225807
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/calls.c | 11 |
2 files changed, 13 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 327564f..6340afe 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,11 @@ 2015-07-15 Uros Bizjak <ubizjak@gmail.com> + PR rtl-optimization/58066 + * calls.c (expand_call): Precompute register parameters before stack + alignment is performed. + +2015-07-15 Uros Bizjak <ubizjak@gmail.com> + PR rtl-optimization/66838 * postreload.c (reload_cse_move2add): Also process CALL_INSN_FUNCTION_USAGE when resetting information of diff --git a/gcc/calls.c b/gcc/calls.c index 143e612..2a297b0 100644 --- a/gcc/calls.c +++ b/gcc/calls.c @@ -3144,6 +3144,13 @@ expand_call (tree exp, rtx target, int ignore) compute_argument_addresses (args, argblock, num_actuals); + /* Precompute all register parameters. It isn't safe to compute + anything once we have started filling any specific hard regs. + TLS symbols sometimes need a call to resolve. Precompute + register parameters before any stack pointer manipulation + to avoid unaligned stack in the called function. */ + precompute_register_parameters (num_actuals, args, ®_parm_seen); + /* Perform stack alignment before the first push (the last arg). */ if (argblock == 0 && adjusted_args_size.constant > reg_parm_stack_space @@ -3184,10 +3191,6 @@ expand_call (tree exp, rtx target, int ignore) funexp = rtx_for_function_call (fndecl, addr); - /* Precompute all register parameters. It isn't safe to compute anything - once we have started filling any specific hard regs. */ - precompute_register_parameters (num_actuals, args, ®_parm_seen); - if (CALL_EXPR_STATIC_CHAIN (exp)) static_chain_value = expand_normal (CALL_EXPR_STATIC_CHAIN (exp)); else |