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[Qemu-devel] [PULL 4/7] include/fpu/softfloat: Fix compilation with Clan
From: |
Alex Bennée |
Subject: |
[Qemu-devel] [PULL 4/7] include/fpu/softfloat: Fix compilation with Clang on s390x |
Date: |
Thu, 17 Jan 2019 13:27:00 +0000 |
From: Thomas Huth <address@hidden>
Clang v7.0.1 does not like the __int128 variable type for inline
assembly on s390x:
In file included from fpu/softfloat.c:97:
include/fpu/softfloat-macros.h:647:9: error: inline asm error:
This value type register class is not natively supported!
asm("dlgr %0, %1" : "+r"(n) : "r"(d));
^
Disable this code part there now when compiling with Clang, so that
the generic code gets used instead.
Signed-off-by: Thomas Huth <address@hidden>
Reviewed-by: Richard Henderson <address@hidden>
Acked-by: Cornelia Huck <address@hidden>
Signed-off-by: Alex Bennée <address@hidden>
diff --git a/include/fpu/softfloat-macros.h b/include/fpu/softfloat-macros.h
index b1d772e6d4..bd5b6418e3 100644
--- a/include/fpu/softfloat-macros.h
+++ b/include/fpu/softfloat-macros.h
@@ -641,7 +641,7 @@ static inline uint64_t udiv_qrnnd(uint64_t *r, uint64_t n1,
uint64_t q;
asm("divq %4" : "=a"(q), "=d"(*r) : "0"(n0), "1"(n1), "rm"(d));
return q;
-#elif defined(__s390x__)
+#elif defined(__s390x__) && !defined(__clang__)
/* Need to use a TImode type to get an even register pair for DLGR. */
unsigned __int128 n = (unsigned __int128)n1 << 64 | n0;
asm("dlgr %0, %1" : "+r"(n) : "r"(d));
--
2.17.1
- [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Alex Bennée, 2019/01/17
- [Qemu-devel] [PULL 7/7] tests/Makfile: add check-softfloat rule, Alex Bennée, 2019/01/17
- [Qemu-devel] [PULL 5/7] tests/Makefile: add floating point tests, Alex Bennée, 2019/01/17
- [Qemu-devel] [PULL 4/7] include/fpu/softfloat: Fix compilation with Clang on s390x,
Alex Bennée <=
- [Qemu-devel] [PULL 3/7] softfloat: enforce softfloat if the host's FMA is broken, Alex Bennée, 2019/01/17
- [Qemu-devel] [PULL 6/7] scripts/archive-source: include softfloat tests, Alex Bennée, 2019/01/17
- [Qemu-devel] [PULL 1/7] fp-bench: fix update_random_ops, Alex Bennée, 2019/01/17
- [Qemu-devel] [PULL 2/7] fp-bench: remove wrong exponent raise in fill_random, Alex Bennée, 2019/01/17
- Re: [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Peter Maydell, 2019/01/17
- Re: [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Emilio G. Cota, 2019/01/17
- Re: [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Peter Maydell, 2019/01/17
- Re: [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Emilio G. Cota, 2019/01/17
- Re: [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Alex Bennée, 2019/01/18
- Re: [Qemu-devel] [PULL 0/7] check-softfloat, fp-bench and clang compile fixes, Peter Maydell, 2019/01/18