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| author | Claudiu Zissulescu <claziss@synopsys.com> | 2017-09-01 13:43:17 +0200 |
|---|---|---|
| committer | Claudiu Zissulescu <claziss@gcc.gnu.org> | 2017-09-01 13:43:17 +0200 |
| commit | 7cfbf676bdb8783e2818995ddd436a442b4dae75 (patch) | |
| tree | 9c1a5c6698bec6a78ba2568a6606ffd5c2ca82e5 /gcc/config | |
| parent | d2e05fcbdafc26ab0c2babf2b3065d177f71305b (diff) | |
| download | gcc-7cfbf676bdb8783e2818995ddd436a442b4dae75.zip gcc-7cfbf676bdb8783e2818995ddd436a442b4dae75.tar.gz gcc-7cfbf676bdb8783e2818995ddd436a442b4dae75.tar.bz2 | |
[ARC] Use TARGET_USE_ANCHORS_FOR_SYMBOL_P.
We don't want to use anchors for small data: the GP register acts as an anchor in that
case. We also don't want to use them for PC-relative accesses,
where the PC acts as an anchor. TLS symbols require special accesses as well, don't use
anchors for such symbols.
gcc/
2017-04-28 Claudiu Zissulescu <claziss@synopsys.com>
* config/arc/arc.c (arc_use_anchors_for_symbol_p): New function.
(TARGET_USE_ANCHORS_FOR_SYMBOL_P): Define.
gcc/testsuite
2017-04-28 Claudiu Zissulescu <claziss@synopsys.com>
* gcc.target/arc/pr9001184797.c: New test.
From-SVN: r251586
Diffstat (limited to 'gcc/config')
| -rw-r--r-- | gcc/config/arc/arc.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c index bc73a59..5410d6b 100644 --- a/gcc/config/arc/arc.c +++ b/gcc/config/arc/arc.c @@ -10566,6 +10566,30 @@ compact_memory_operand_p (rtx op, machine_mode mode, return false; } +/* Implement TARGET_USE_ANCHORS_FOR_SYMBOL_P. We don't want to use + anchors for small data: the GP register acts as an anchor in that + case. We also don't want to use them for PC-relative accesses, + where the PC acts as an anchor. Prohibit also TLS symbols to use + anchors. */ + +static bool +arc_use_anchors_for_symbol_p (const_rtx symbol) +{ + if (SYMBOL_REF_TLS_MODEL (symbol)) + return false; + + if (flag_pic) + return false; + + if (SYMBOL_REF_SMALL_P (symbol)) + return false; + + return default_use_anchors_for_symbol_p (symbol); +} + +#undef TARGET_USE_ANCHORS_FOR_SYMBOL_P +#define TARGET_USE_ANCHORS_FOR_SYMBOL_P arc_use_anchors_for_symbol_p + struct gcc_target targetm = TARGET_INITIALIZER; #include "gt-arc.h" |