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| author | Michael Meissner <meissner@linux.ibm.com> | 2021-06-17 22:05:16 -0400 |
|---|---|---|
| committer | Michael Meissner <meissner@linux.ibm.com> | 2021-06-17 22:05:16 -0400 |
| commit | 7d08043da935095543172f91f691917bd6379c53 (patch) | |
| tree | c7f3bebe4a23809c4a90d8b208ff7ae04b44f037 /gcc/tree-ssa-phiopt.c | |
| parent | 688359a27d835bbdab554fdf5eb207f1bd678371 (diff) | |
| download | gcc-7d08043da935095543172f91f691917bd6379c53.zip gcc-7d08043da935095543172f91f691917bd6379c53.tar.gz gcc-7d08043da935095543172f91f691917bd6379c53.tar.bz2 | |
Add IEEE 128-bit min/max support on PowerPC.
This patch adds the support for the IEEE 128-bit floating point C minimum and
maximum instructions. The next patch will add the support for using the
compare and set mask instruction to implement conditional moves.
This patch does not try to re-use the code used for SF/DF min/max
support. It defines a separate insn for the IEEE 128-bit support. It
uses the code iterator <minmax> to simplify adding both operations.
GCC will not convert ternary operations into using min/max instructions
provided in this patch unless the user uses -Ofast. The next patch that adds
conditional move instructions will enable the ternary conversion in many cases.
gcc/
2021-06-17 Michael Meissner <meissner@linux.ibm.com>
* config/rs6000/rs6000.c (rs6000_emit_minmax): Add support for ISA
3.1 IEEE 128-bit floating point xsmaxcqp/xsmincqp instructions.
* config/rs6000/rs6000.md (s<minmax><mode>3, IEEE128 iterator):
New insns.
gcc/testsuite/
2021-06-17 Michael Meissner <meissner@linux.ibm.com>
* gcc.target/powerpc/float128-minmax-2.c: New test.
Diffstat (limited to 'gcc/tree-ssa-phiopt.c')
0 files changed, 0 insertions, 0 deletions