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authorXiong Hu Luo <luoxhu@linux.ibm.com>2019-08-14 02:18:33 +0000
committerXiong Hu Luo <luoxhu@gcc.gnu.org>2019-08-14 02:18:33 +0000
commit5747e0c0e1bce0df39ab7ac342162ecdc6e1343d (patch)
treea0ffc5e9ca2f76f3a97f9789f8956e8d11d02f53 /gcc/builtins.c
parent37987c39eb22e5666745fd5edcfc518d1e59ed72 (diff)
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Enable math functions linking with static library for LTO
In LTO mode, if static library and dynamic library contains same function and both libraries are passed as arguments, linker will link the function in dynamic library no matter the sequence. This patch will output LTO symbol node as UNDEF if BUILT_IN_NORMAL function FNDECL is a math function, then the function in static library will be linked first if its sequence is ahead of the dynamic library. gcc/ChangeLog 2019-08-14 Xiong Hu Luo <luoxhu@linux.ibm.com> PR lto/91287 * builtins.c (builtin_with_linkage_p): New function. * builtins.h (builtin_with_linkage_p): New function. * symtab.c (write_symbol): Remove redundant assert. * lto-streamer-out.c (symtab_node::output_to_lto_symbol_table_p): Remove FIXME and use builtin_with_linkage_p. From-SVN: r274411
Diffstat (limited to 'gcc/builtins.c')
-rw-r--r--gcc/builtins.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/gcc/builtins.c b/gcc/builtins.c
index cb1a45a..ece9f56 100644
--- a/gcc/builtins.c
+++ b/gcc/builtins.c
@@ -11244,3 +11244,90 @@ target_char_cst_p (tree t, char *p)
*p = (char)tree_to_uhwi (t);
return true;
}
+
+/* Return true if the builtin DECL is implemented in a standard library.
+ Otherwise returns false which doesn't guarantee it is not (thus the list of
+ handled builtins below may be incomplete). */
+
+bool
+builtin_with_linkage_p (tree decl)
+{
+ if (DECL_BUILT_IN_CLASS (decl) == BUILT_IN_NORMAL)
+ switch (DECL_FUNCTION_CODE (decl))
+ {
+ CASE_FLT_FN (BUILT_IN_ACOS):
+ CASE_FLT_FN (BUILT_IN_ACOSH):
+ CASE_FLT_FN (BUILT_IN_ASIN):
+ CASE_FLT_FN (BUILT_IN_ASINH):
+ CASE_FLT_FN (BUILT_IN_ATAN):
+ CASE_FLT_FN (BUILT_IN_ATANH):
+ CASE_FLT_FN (BUILT_IN_ATAN2):
+ CASE_FLT_FN (BUILT_IN_CBRT):
+ CASE_FLT_FN (BUILT_IN_CEIL):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_CEIL):
+ CASE_FLT_FN (BUILT_IN_COPYSIGN):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_COPYSIGN):
+ CASE_FLT_FN (BUILT_IN_COS):
+ CASE_FLT_FN (BUILT_IN_COSH):
+ CASE_FLT_FN (BUILT_IN_ERF):
+ CASE_FLT_FN (BUILT_IN_ERFC):
+ CASE_FLT_FN (BUILT_IN_EXP):
+ CASE_FLT_FN (BUILT_IN_EXP2):
+ CASE_FLT_FN (BUILT_IN_EXPM1):
+ CASE_FLT_FN (BUILT_IN_FABS):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_FABS):
+ CASE_FLT_FN (BUILT_IN_FDIM):
+ CASE_FLT_FN (BUILT_IN_FLOOR):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_FLOOR):
+ CASE_FLT_FN (BUILT_IN_FMA):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_FMA):
+ CASE_FLT_FN (BUILT_IN_FMAX):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_FMAX):
+ CASE_FLT_FN (BUILT_IN_FMIN):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_FMIN):
+ CASE_FLT_FN (BUILT_IN_FMOD):
+ CASE_FLT_FN (BUILT_IN_FREXP):
+ CASE_FLT_FN (BUILT_IN_HYPOT):
+ CASE_FLT_FN (BUILT_IN_ILOGB):
+ CASE_FLT_FN (BUILT_IN_LDEXP):
+ CASE_FLT_FN (BUILT_IN_LGAMMA):
+ CASE_FLT_FN (BUILT_IN_LLRINT):
+ CASE_FLT_FN (BUILT_IN_LLROUND):
+ CASE_FLT_FN (BUILT_IN_LOG):
+ CASE_FLT_FN (BUILT_IN_LOG10):
+ CASE_FLT_FN (BUILT_IN_LOG1P):
+ CASE_FLT_FN (BUILT_IN_LOG2):
+ CASE_FLT_FN (BUILT_IN_LOGB):
+ CASE_FLT_FN (BUILT_IN_LRINT):
+ CASE_FLT_FN (BUILT_IN_LROUND):
+ CASE_FLT_FN (BUILT_IN_MODF):
+ CASE_FLT_FN (BUILT_IN_NAN):
+ CASE_FLT_FN (BUILT_IN_NEARBYINT):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_NEARBYINT):
+ CASE_FLT_FN (BUILT_IN_NEXTAFTER):
+ CASE_FLT_FN (BUILT_IN_NEXTTOWARD):
+ CASE_FLT_FN (BUILT_IN_POW):
+ CASE_FLT_FN (BUILT_IN_REMAINDER):
+ CASE_FLT_FN (BUILT_IN_REMQUO):
+ CASE_FLT_FN (BUILT_IN_RINT):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_RINT):
+ CASE_FLT_FN (BUILT_IN_ROUND):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_ROUND):
+ CASE_FLT_FN (BUILT_IN_SCALBLN):
+ CASE_FLT_FN (BUILT_IN_SCALBN):
+ CASE_FLT_FN (BUILT_IN_SIN):
+ CASE_FLT_FN (BUILT_IN_SINH):
+ CASE_FLT_FN (BUILT_IN_SINCOS):
+ CASE_FLT_FN (BUILT_IN_SQRT):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_SQRT):
+ CASE_FLT_FN (BUILT_IN_TAN):
+ CASE_FLT_FN (BUILT_IN_TANH):
+ CASE_FLT_FN (BUILT_IN_TGAMMA):
+ CASE_FLT_FN (BUILT_IN_TRUNC):
+ CASE_FLT_FN_FLOATN_NX (BUILT_IN_TRUNC):
+ return true;
+ default:
+ break;
+ }
+ return false;
+}