Hello!
As exposed by gcc.dg/torture/fp-int-convert-timode-?.c testcases from
PR88931, it is expected that libgcc2 rounds calculations according to
set FP rounding mode. To achieve dynamic rounding, we have to pass
-mfp-rounding-mode=d in addition to -mieee when compiling libgcc2.
2019-01-31 Uroš Bizjak <ubiz...@gmail.com>
* config/alpha/t-linux: Add -mfp-rounding-mode=d
to HOST_LIBGCC2_CFLAGS.
Patch was bootstrapped and regression tested on alphaev68-linux-gnu,
where it fixes all failures with mentioned testcases.
Committed to mainline SVN.
Uros.
Index: config/alpha/t-linux
===================================================================
--- config/alpha/t-linux (revision 268424)
+++ config/alpha/t-linux (working copy)
@@ -1 +1,4 @@
SHLIB_MAPFILES += $(srcdir)/config/alpha/libgcc-alpha-ldbl.ver
+
+# Use dynamic rounding mode.
+HOST_LIBGCC2_CFLAGS += -mfp-rounding-mode=d
