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| author | Andreas Krebbel <Andreas.Krebbel@de.ibm.com> | 2009-03-09 13:30:19 +0000 |
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| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2009-03-09 13:30:19 +0000 |
| commit | 929b7fc3c0afc5d5154ce9e40371a42a0610fd7f (patch) | |
| tree | 031dd1ced917e31481cde7178045772632594fd5 /gcc/recog.c | |
| parent | 1803581d7698029091783f8c9ac6220aa52ccec5 (diff) | |
| download | gcc-929b7fc3c0afc5d5154ce9e40371a42a0610fd7f.zip gcc-929b7fc3c0afc5d5154ce9e40371a42a0610fd7f.tar.gz gcc-929b7fc3c0afc5d5154ce9e40371a42a0610fd7f.tar.bz2 | |
recog.c (verfiy_changes): Disallow renaming of hard regs in inline asms for register asm ("") declarations.
2009-03-09 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* recog.c (verfiy_changes): Disallow renaming of hard regs in
inline asms for register asm ("") declarations.
2009-03-09 Andreas Krebbel <Andreas.Krebbel@de.ibm.com>
* gcc.target/s390/20090223-1.c: New testcase.
From-SVN: r144726
Diffstat (limited to 'gcc/recog.c')
| -rw-r--r-- | gcc/recog.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/recog.c b/gcc/recog.c index 7c22fae..70370e3 100644 --- a/gcc/recog.c +++ b/gcc/recog.c @@ -379,6 +379,16 @@ verify_changes (int num) if (! memory_address_p (GET_MODE (object), XEXP (object, 0))) break; } + else if (REG_P (changes[i].old) + && asm_noperands (PATTERN (object)) > 0 + && REG_EXPR (changes[i].old) != NULL_TREE + && DECL_ASSEMBLER_NAME_SET_P (REG_EXPR (changes[i].old)) + && DECL_REGISTER (REG_EXPR (changes[i].old))) + { + /* Don't allow changes of hard register operands to inline + assemblies if they have been defined as register asm ("x"). */ + break; + } else if (insn_invalid_p (object)) { rtx pat = PATTERN (object); |