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| author | Bernd Edlinger <bernd.edlinger@hotmail.de> | 2016-06-06 12:31:59 +0000 |
|---|---|---|
| committer | Bernd Edlinger <edlinger@gcc.gnu.org> | 2016-06-06 12:31:59 +0000 |
| commit | 93671519e202e3bc5ab592bb6318aa738e4ae58f (patch) | |
| tree | 4c408260aa6953423d714fd94976bb8529014f19 /gcc/gimple.c | |
| parent | 690f24b7754826f08fc19119dd3a30a6c07e9919 (diff) | |
| download | gcc-93671519e202e3bc5ab592bb6318aa738e4ae58f.tar.gz | |
re PR c/24414 (Old-style asms don't clobber memory)
gcc/
2016-06-06 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR c/24414
* cfgexpand.c (expand_asm_loc): Remove handling for ADDR_EXPR.
Implicitly clobber memory for basic asm with non-empty assembler
string. Use targetm.md_asm_adjust also here.
* compare-elim.c (arithmetic_flags_clobber_p): Use asm_noperands here.
* final.c (final_scan_insn): Handle basic asm in PARALLEL block.
* gimple.c (gimple_asm_clobbers_memory_p): Handle basic asm with
non-empty assembler string.
* ira.c (compute_regs_asm_clobbered): Use asm_noperands here.
* recog.c (asm_noperands): Handle basic asm in PARALLEL block.
(decode_asm_operands): Handle basic asm in PARALLEL block.
(extract_insn): Handle basic asm in PARALLEL block.
* doc/extend.texi: Mention new behavior of basic asm.
* config/ia64/ia64 (rtx_needs_barrier): Handle ASM_INPUT here.
* config/pa/pa.c (branch_to_delay_slot_p, branch_needs_nop_p,
branch_needs_nop_p): Use asm_noperands.
gcc/testsuite/
2016-06-06 Bernd Edlinger <bernd.edlinger@hotmail.de>
PR c/24414
* gcc.target/i386/pr24414.c: New test.
From-SVN: r237133
Diffstat (limited to 'gcc/gimple.c')
| -rw-r--r-- | gcc/gimple.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/gimple.c b/gcc/gimple.c index 226b0801072..75a1ed8ee0b 100644 --- a/gcc/gimple.c +++ b/gcc/gimple.c @@ -2583,6 +2583,10 @@ gimple_asm_clobbers_memory_p (const gasm *stmt) return true; } + /* Non-empty basic ASM implicitly clobbers memory. */ + if (gimple_asm_input_p (stmt) && strlen (gimple_asm_string (stmt)) != 0) + return true; + return false; } |