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| author | Andreas Krebbel <krebbel@linux.vnet.ibm.com> | 2015-05-19 14:49:35 +0000 |
|---|---|---|
| committer | Andreas Krebbel <krebbel@gcc.gnu.org> | 2015-05-19 14:49:35 +0000 |
| commit | 057021105092a95a712e4237959025683bee7d42 (patch) | |
| tree | 084d6a7c2fc2a62838a7266fa9e6d26ca16f3e10 /gcc | |
| parent | 376ee136dd082f25ecd608143e59fb4f24899812 (diff) | |
| download | gcc-057021105092a95a712e4237959025683bee7d42.zip gcc-057021105092a95a712e4237959025683bee7d42.tar.gz gcc-057021105092a95a712e4237959025683bee7d42.tar.bz2 | |
S/390 Fix secondary reload issue with store/load relative operands.
We need a scratch register for loading from or storing to a symbolic
memory reference where we cannot use the load/store relative
instructions for. However, the check currently fails to handle
floating point modes in GPRs correctly.
gcc/
* config/s390/s390.c (s390_secondary_reload): Fix check for
load/store relative.
From-SVN: r223368
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/s390/s390.c | 16 |
2 files changed, 12 insertions, 9 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 2f3b230..8ae08e6 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,10 @@ 2015-05-19 Andreas Krebbel <krebbel@linux.vnet.ibm.com> + * config/s390/s390.c (s390_secondary_reload): Fix check for + load/store relative. + +2015-05-19 Andreas Krebbel <krebbel@linux.vnet.ibm.com> + * recog.h: Increase MAX_RECOG_ALTERNATIVES. Change type of alternative_mask to uint64_t. diff --git a/gcc/config/s390/s390.c b/gcc/config/s390/s390.c index e9a4e70..2c83c00 100644 --- a/gcc/config/s390/s390.c +++ b/gcc/config/s390/s390.c @@ -3141,17 +3141,15 @@ s390_secondary_reload (bool in_p, rtx x, reg_class_t rclass_i, sri->icode = ((mode == DImode) ? CODE_FOR_reloaddi_larl_odd_addend_z10 : CODE_FOR_reloadsi_larl_odd_addend_z10); - /* On z10 we need a scratch register when moving QI, TI or floating - point mode values from or to a memory location with a SYMBOL_REF - or if the symref addend of a SI or DI move is not aligned to the - width of the access. */ + /* Handle all the (mem (symref)) accesses we cannot use the z10 + instructions for. */ if (MEM_P (x) && s390_loadrelative_operand_p (XEXP (x, 0), NULL, NULL) - && (mode == QImode || mode == TImode || FLOAT_MODE_P (mode) - || (!TARGET_ZARCH && mode == DImode) - || ((mode == HImode || mode == SImode || mode == DImode) - && (!s390_check_symref_alignment (XEXP (x, 0), - GET_MODE_SIZE (mode)))))) + && (mode == QImode + || !reg_classes_intersect_p (GENERAL_REGS, rclass) + || GET_MODE_SIZE (mode) > UNITS_PER_WORD + || !s390_check_symref_alignment (XEXP (x, 0), + GET_MODE_SIZE (mode)))) { #define __SECONDARY_RELOAD_CASE(M,m) \ case M##mode: \ |