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authorCarrot Wei <carrot@google.com>2014-05-15 02:06:33 (GMT)
committerAndrew Hsieh <andrewhsieh@google.com>2014-05-15 07:59:04 (GMT)
commit331e362574142e4c1d9d509533d1c96b6dc54d13 (patch)
treeb078d9e04e3437c2d322b4d3406fedc973833440 /gcc-4.9/gcc/testsuite/gcc.target
parent5cd97bdbf2d97af4b0e4301f5f2b6c2a4301baf9 (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.c10
-rw-r--r--gcc-4.9/gcc/testsuite/gcc.target/arm/got2.c11
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;
+}