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| author | Alan Modra <amodra@gmail.com> | 2012-06-05 11:29:14 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gcc.gnu.org> | 2012-06-05 11:29:14 +0930 |
| commit | 46f714c86256879a829a25536444f9119e1fb4b1 (patch) | |
| tree | 811e5d4b6e4a48e291710ee16616cdb9711dd7b8 /gcc/config | |
| parent | 6d1f6affb2d7c14f6c74d4a15be7e39de601bb85 (diff) | |
| download | gcc-46f714c86256879a829a25536444f9119e1fb4b1.zip gcc-46f714c86256879a829a25536444f9119e1fb4b1.tar.gz gcc-46f714c86256879a829a25536444f9119e1fb4b1.tar.bz2 | |
rs6000.c (ptr_regno_for_savres): Comment.
gcc/
* config/rs6000/rs6000.c (ptr_regno_for_savres): Comment.
(rs6000_emit_prologue): Ensure register used for inline saves
of vector regs is not the static chain register. Revise comment.
gcc/testsuite/
* gcc.target/powerpc/savres.c: Add -mdynamic-no-pic for darwin.
Check static chain in nested funcs.
From-SVN: r188225
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 5796e4a..7b6e1e0 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -19109,6 +19109,9 @@ rs6000_emit_stack_reset (rs6000_stack_t *info, return NULL_RTX; } +/* Return the register number used as a pointer by out-of-line + save/restore functions. */ + static inline unsigned ptr_regno_for_savres (int sel) { @@ -19846,6 +19849,9 @@ rs6000_emit_prologue (void) int sel = SAVRES_SAVE | SAVRES_VR; unsigned ptr_regno = ptr_regno_for_savres (sel); + if (using_static_chain_p + && ptr_regno == STATIC_CHAIN_REGNUM) + ptr_regno = 12; if (REGNO (frame_reg_rtx) != ptr_regno) START_USE (ptr_regno); ptr_reg = gen_rtx_REG (Pmode, ptr_regno); @@ -19954,9 +19960,9 @@ rs6000_emit_prologue (void) int offset; int save_regno; - /* Get VRSAVE onto a GPR. Note that ABI_V4 might be using r12 - as frame_reg_rtx and r11 as the static chain pointer for - nested functions. */ + /* Get VRSAVE onto a GPR. Note that ABI_V4 and ABI_DARWIN might + be using r12 as frame_reg_rtx and r11 as the static chain + pointer for nested functions. */ save_regno = 12; if (DEFAULT_ABI == ABI_AIX && !using_static_chain_p) save_regno = 11; |