Explicitly add -msse2 to compile HF related libgcc source file.

For 32-bit libgcc configure w/o sse2, there's would be an error since
GCC only support _Float16 under sse2. Explicitly add -msse2 for those
HF related libgcc functions, so users can still link them w/ the
upper configuration.

libgcc/ChangeLog:

	* Makefile.in: Adjust to support specific CFLAGS for each
	libgcc source file.
	* config/i386/64/t-softfp: Explicitly add -msse2 for HF
	related libgcc source files.
	* config/i386/t-softfp: Ditto.
	* config/i386/_divhc3.c: New file.
	* config/i386/_mulhc3.c: New file.

diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
index 7ec975845544589eefb21528b8e1a2b2122cbe86..32e329f776436839501e683a47a6f7fee3edcabd 100644 (file)
--- a/libgcc/Makefile.in
+++ b/libgcc/Makefile.in
@@ -314,7 +314,7 @@ MULTIOSSUBDIR := $(shell if test $(MULTIOSDIR) != .; then echo /$(MULTIOSDIR); f
 inst_libdir = $(libsubdir)$(MULTISUBDIR)
 inst_slibdir = $(slibdir)$(MULTIOSSUBDIR)
 
-gcc_compile_bare = $(CC) $(INTERNAL_CFLAGS)
+gcc_compile_bare = $(CC) $(INTERNAL_CFLAGS) $(CFLAGS-$(<F))
 compile_deps = -MT $@ -MD -MP -MF $(basename $@).dep
 gcc_compile = $(gcc_compile_bare) -o $@ $(compile_deps)
 gcc_s_compile = $(gcc_compile) -DSHARED

diff --git a/libgcc/config/i386/64/t-softfp b/libgcc/config/i386/64/t-softfp
index f9d8b3a945c752357efa1d2cee8c45e842a66c3b..3bec464d7867c3f46c796e915c29155a06b5072f 100644 (file)
--- a/libgcc/config/i386/64/t-softfp
+++ b/libgcc/config/i386/64/t-softfp
@@ -1 +1,6 @@
 softfp_extras := fixhfti fixunshfti floattihf floatuntihf
+
+CFLAGS-fixhfti.c += -msse2
+CFLAGS-fixunshfti.c += -msse2
+CFLAGS-floattihf.c += -msse2
+CFLAGS-floatunstihf.c += -msse2

diff --git a/libgcc/config/i386/_divhc3.c b/libgcc/config/i386/_divhc3.c
new file mode 100644 (file)
index 0000000..4cf92aa
--- /dev/null
+++ b/libgcc/config/i386/_divhc3.c
@@ -0,0 +1,4 @@
+#ifdef __SSE2__
+#define L_divhc3
+#include "libgcc2.c"
+#endif

diff --git a/libgcc/config/i386/_mulhc3.c b/libgcc/config/i386/_mulhc3.c
new file mode 100644 (file)
index 0000000..85a8a2f
--- /dev/null
+++ b/libgcc/config/i386/_mulhc3.c
@@ -0,0 +1,4 @@
+#ifdef __SSE2__
+#define L_mulhc3
+#include "libgcc2.c"
+#endif

diff --git a/libgcc/config/i386/t-softfp b/libgcc/config/i386/t-softfp
index 4ac214eb0ce31ed8c0177869cd0bdc8ceba16fb6..2363ea1719474f74f2d1d01efa903baf2ce59fc1 100644 (file)
--- a/libgcc/config/i386/t-softfp
+++ b/libgcc/config/i386/t-softfp
@@ -1,6 +1,26 @@
 LIB2ADD += $(srcdir)/config/i386/sfp-exceptions.c
 
+# Replace _divhc3 and _mulhc3.
+libgcc2-hf-functions = _divhc3 _mulhc3
+LIB2FUNCS_EXCLUDE += $(libgcc2-hf-functions)
+libgcc2-hf-extras = $(addsuffix .c, $(libgcc2-hf-functions))
+LIB2ADD_ST += $(addprefix $(srcdir)/config/i386/, $(libgcc2-hf-extras))
+
 softfp_extensions := hfsf hfdf hftf hfxf sfdf sftf dftf xftf
 softfp_truncations := tfhf xfhf dfhf sfhf tfsf dfsf tfdf tfxf
 
-softfp_extras += eqhf2
\ No newline at end of file
+softfp_extras += eqhf2
+
+CFLAGS-extendhfsf2.c += -msse2
+CFLAGS-extendhfdf2.c += -msse2
+CFLAGS-extendhftf2.c += -msse2
+CFLAGS-extendhfxf2.c += -msse2
+
+CFLAGS-truncsfhf2.c += -msse2
+CFLAGS-truncdfhf2.c += -msse2
+CFLAGS-truncxfhf2.c += -msse2
+CFLAGS-trunctfhf2.c += -msse2
+
+CFLAGS-eqhf2.c += -msse2
+CFLAGS-_divhc3.c += -msse2
+CFLAGS-_mulhc3.c += -msse2