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author | Carrot Wei <carrot@google.com> | 2014-05-15 10:06:33 +0800 |
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committer | Andrew Hsieh <andrewhsieh@google.com> | 2014-05-15 15:59:04 +0800 |
commit | 331e362574142e4c1d9d509533d1c96b6dc54d13 (patch) | |
tree | b078d9e04e3437c2d322b4d3406fedc973833440 /gcc-4.9/gcc/testsuite/gcc.target | |
parent | 5cd97bdbf2d97af4b0e4301f5f2b6c2a4301baf9 (diff) | |
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[4.8, 4.9] Add simplify-got
This pass optimize GOT_PREL (already exists in toolchain/gcc/gcc-4.6)
Backport from svn://gcc.gnu.org/svn/gcc/branches/google/gcc-4_6-mobile
UNSPEC_GOT_PREL_SYM is now in new file arm/unspecs.md
4.9 port is slightly different due to changes in gcc passes
See Google b/14811006
r173209 | carrot | 2011-04-30 16:07:46 +0800 (Sat, 30 Apr 2011) | 21 lines
* hooks.c (hook_rtx_void_null): New function.
* hooks.h (hook_rtx_void_null): New prototype.
* target.def (got_access): New hook vector declaration.
* tree-pass.h (pass_simplify_got): New pass.
* timevar.def (TV_SIMPLIFY_GOT): New TV id.
* simplify-got.c: New source file.
* Makefile.in (simplify-got.o): Add a new file.
* passes.c (init_optimization_passes): Add a new pass.
* config/arm/arm.c (arm_output_addr_const_extra): Output GOT_PREL
relocation.
(arm_get_pic_reg): New function.
(arm_clear_pic_reg): New function.
(arm_can_simplify_got_access): New function.
(arm_loaded_global_var): New function.
(arm_load_global_address): New function.
* config/arm/arm.md (UNSPEC_GOT_PREL_SYM): New UNSPEC symbol.
* testsuite/gcc.target/arm/got1.c: New testcase.
* testsuite/gcc.target/arm/got2.c: New testcase.
Change-Id: I91e881df19bb6937a5fbcc8e6b83d158717c7773
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.target')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/arm/got1.c | 10 | ||||
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.target/arm/got2.c | 11 |
2 files changed, 21 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.target/arm/got1.c b/gcc-4.9/gcc/testsuite/gcc.target/arm/got1.c new file mode 100644 index 0000000..46a67fb --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/arm/got1.c @@ -0,0 +1,10 @@ +/* { dg-options "-Os -fpic" } */ +/* { dg-final { scan-assembler "GOT_PREL" } } */ + +extern int x; +int foo(int j) +{ + int t = x; + x = j; + return t; +} diff --git a/gcc-4.9/gcc/testsuite/gcc.target/arm/got2.c b/gcc-4.9/gcc/testsuite/gcc.target/arm/got2.c new file mode 100644 index 0000000..725f49e --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.target/arm/got2.c @@ -0,0 +1,11 @@ +/* We should not use GOT_PREL relocation to load global address with so + many global accesses. */ + +/* { dg-options "-Os -fpic" } */ +/* { dg-final { scan-assembler-not "GOT_PREL" } } */ + +extern int x1, x2, x3, x4, x5; +int sum() +{ + return x1 + x2 + x3 + x4 + x5; +} |