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.
Bootstrapped and regtested on x86_64-linux-gnu{-m32,}.
Ok for trunk?
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.
---
libgcc/Makefile.in | 2 +-
libgcc/config/i386/64/t-softfp | 5 +++++
libgcc/config/i386/_divhc3.c | 4 ++++
libgcc/config/i386/_mulhc3.c | 4 ++++
libgcc/config/i386/t-softfp | 34 +++++++++++++++++++++++++++++++++-
5 files changed, 47 insertions(+), 2 deletions(-)
create mode 100644 libgcc/config/i386/_divhc3.c
create mode 100644 libgcc/config/i386/_mulhc3.c
diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
index 7ec97584554..32e329f7764 100644
--- 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 f9d8b3a945c..e1c480efbdf 100644
--- 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
\ No newline at end of file
diff --git a/libgcc/config/i386/_divhc3.c b/libgcc/config/i386/_divhc3.c
new file mode 100644
index 00000000000..4cf92aa23d9
--- /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
index 00000000000..85a8a2f5fb7
--- /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 4ac214eb0ce..be13f10f984 100644
--- a/libgcc/config/i386/t-softfp
+++ b/libgcc/config/i386/t-softfp
@@ -1,6 +1,38 @@
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-extendsfdf2.c += -msse2
+CFLAGS-extendsftf2.c += -msse2
+
+CFLAGS-extenddftf2.c += -msse2
+CFLAGS-extendxftf2.c += -msse2
+
+CFLAGS-truncsfhf2.c += -msse2
+CFLAGS-truncdfhf2.c += -msse2
+CFLAGS-truncxfhf2.c += -msse2
+CFLAGS-trunctfhf2.c += -msse2
+
+CFLAGS-truncdfsf2.c += -msse2
+CFLAGS-trunctfsf2.c += -msse2
+
+CFLAGS-trunctfdf2.c += -msse2
+CFLAGS-trunctfxf2.c += -msse2
+
+CFLAGS-eqhf2.c += -msse2
+CFLAGS-_divhc3.c += -msse2
+CFLAGS-_mulhc3.c += -msse2
\ No newline at end of file
--
2.18.1
