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| author | Nathan Froyd <froydnj@codesourcery.com> | 2007-06-05 19:46:23 +0000 |
|---|---|---|
| committer | Nathan Froyd <froydnj@gcc.gnu.org> | 2007-06-05 19:46:23 +0000 |
| commit | 52ff33d0eb56df70238a99b7aa66140609f3abc3 (patch) | |
| tree | ddb2aff474d2b21b69f98462040e6897f8ebc7ce /libcpp/include/cpplib.h | |
| parent | b08f991d9127706927d639bb51173e4474b976df (diff) | |
| download | gcc-52ff33d0eb56df70238a99b7aa66140609f3abc3.zip gcc-52ff33d0eb56df70238a99b7aa66140609f3abc3.tar.gz gcc-52ff33d0eb56df70238a99b7aa66140609f3abc3.tar.bz2 | |
rs6000.h (FIXED_SCRATCH): Use r0 as a scratch register on SPE targets.
* config/rs6000/rs6000.h (FIXED_SCRATCH): Use r0 as a scratch
register on SPE targets. Change documentation to reflect
reality.
* config/rs6000/rs6000.c (rs6000_conditional_register_usage):
Change FIXED_SCRATCH to 14 and document why we're keeping r14
out of the register allocation pool.
(rs6000_reg_live_or_pic_offset_p): New function.
(rs6000_emit_prologue): Move the actual saving of LR up to free
r0 for holding r11. Split saving of SPE 64-bit registers into
its own case. Ensure that offsets will always be in-range for
'evstdd' by using r11 as a scratch register to point at the start
of the SPE save area. Save r11 if necessary, as it is the static
chain register.
(rs6000_emit_epilogue): Split restoring of SPE 64-bit registers
into its own case. Ensure that offsets will always be in-range
for 'evldd' by using r11 as a scratch register to point at the
start of the SPE save area. Also adjust r11 when restoring
the stack pointer to compensate for pre-loading r11.
From-SVN: r125340
Diffstat (limited to 'libcpp/include/cpplib.h')
0 files changed, 0 insertions, 0 deletions