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| author | Segher Boessenkool <segher@kernel.crashing.org> | 2018-06-01 20:46:23 +0200 |
|---|---|---|
| committer | Segher Boessenkool <segher@gcc.gnu.org> | 2018-06-01 20:46:23 +0200 |
| commit | 560a1dc6ed5df6430e315f539716ab93419e8db9 (patch) | |
| tree | f94be7a17d25622029b98f16240db8b8ec8002d2 | |
| parent | ddd3e26e42b8d55989f9964c6ec6ee50b30b1802 (diff) | |
| download | gcc-560a1dc6ed5df6430e315f539716ab93419e8db9.zip gcc-560a1dc6ed5df6430e315f539716ab93419e8db9.tar.gz gcc-560a1dc6ed5df6430e315f539716ab93419e8db9.tar.bz2 | |
rs6000: Fix mangling for 128-bit float
This patch changes the (C++) mangling of the 128-bit float types.
IBM long double ("double-double") is mangled as "g", as before, and
IEEE 128-bit long double is mangled as "u9__ieee128".
* config/rs6000/rs6000.c (rs6000_mangle_type): Change the mangling of
the 128-bit floating point types. Fix function comment.
From-SVN: r261078
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/config/rs6000/rs6000.c | 31 |
2 files changed, 12 insertions, 24 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 24cf22e..e064d58 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2018-06-01 Segher Boessenkool <segher@kernel.crashing.org> + + * config/rs6000/rs6000.c (rs6000_mangle_type): Change the mangling of + the 128-bit floating point types. Fix function comment. + 2018-06-01 Kyrylo Tkachov <kyrylo.tkachov@arm.com> * config/aarch64/aarch64-simd.md diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c index 26d58fc..c5c9821 100644 --- a/gcc/config/rs6000/rs6000.c +++ b/gcc/config/rs6000/rs6000.c @@ -32095,8 +32095,9 @@ rs6000_handle_altivec_attribute (tree *node, return NULL_TREE; } -/* AltiVec defines four built-in scalar types that serve as vector - elements; we must teach the compiler how to mangle them. */ +/* AltiVec defines five built-in scalar types that serve as vector + elements; we must teach the compiler how to mangle them. The 128-bit + floating point mangling is target-specific as well. */ static const char * rs6000_mangle_type (const_tree type) @@ -32113,30 +32114,12 @@ rs6000_mangle_type (const_tree type) if (type == bool_int_type_node) return "U6__booli"; if (type == bool_long_long_type_node) return "U6__boolx"; - /* Use a unique name for __float128 rather than trying to use "e" or "g". Use - "g" for IBM extended double, no matter whether it is long double (using - -mabi=ibmlongdouble) or the distinct __ibm128 type. */ - if (TARGET_FLOAT128_TYPE) - { - if (type == ieee128_float_type_node) - return "U10__float128"; - - if (type == ibm128_float_type_node) - return "u8__ibm128"; - - if (TARGET_LONG_DOUBLE_128 && type == long_double_type_node) - return (TARGET_IEEEQUAD) ? "U10__float128" : "g"; - } - - /* Mangle IBM extended float long double as `g' (__float128) on - powerpc*-linux where long-double-64 previously was the default. */ - if (TYPE_MAIN_VARIANT (type) == long_double_type_node - && TARGET_ELF - && TARGET_LONG_DOUBLE_128 - && !TARGET_IEEEQUAD) + if (SCALAR_FLOAT_TYPE_P (type) && FLOAT128_IBM_P (TYPE_MODE (type))) return "g"; + if (SCALAR_FLOAT_TYPE_P (type) && FLOAT128_IEEE_P (TYPE_MODE (type))) + return "u9__ieee128"; - /* For all other types, use normal C++ mangling. */ + /* For all other types, use the default mangling. */ return NULL; } |