The LLVM project made some questionable decisions about defaults for
armv7 (e.g. they enable NEON that is not there on NVIDIA and Marvell
platforms).
On top of that, getHostCPUFeatures() doesn't disable missing machine
attributes. Finally, -neon alone is not sufficient to disable emmision
of NEON instructions.
Signed-off-by: Lubomir Rintel <lkund...@v3.sk>
Cc: <mesa-sta...@lists.freedesktop.org>
---
src/gallium/auxiliary/gallivm/lp_bld_misc.cpp | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
index f3b5784fce7..f307c26d4f7 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
+++ b/src/gallium/auxiliary/gallivm/lp_bld_misc.cpp
@@ -625,6 +625,13 @@
lp_build_create_jit_compiler_for_module(LLVMExecutionEngineRef *OutJIT,
MAttrs.push_back("-avx512vl");
#endif
#endif
+#if defined(PIPE_ARCH_ARM)
+ if (!util_cpu_caps.has_neon) {
+ MAttrs.push_back("-neon");
+ MAttrs.push_back("-crypto");
+ MAttrs.push_back("-vfp2");
+ }
+#endif
#if defined(PIPE_ARCH_PPC)
MAttrs.push_back(util_cpu_caps.has_altivec ? "+altivec" : "-altivec");
--
2.20.1
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