Work around excessive LAPACK test failures on Skylake-X

martin-frbg · web-flow · commit 2271c3506b32 · 2020-05-09T23:49:18.000+02:00
Something in the plain C parts of x86_64 cscal.c and zscal.c appears to be miscompiled by both gfortran9 and ifort when compiling for skylakex-avx512, even when the optimized Haswell microkernel is not in use.
diff --git a/kernel/x86_64/KERNEL.SKYLAKEX b/kernel/x86_64/KERNEL.SKYLAKEX
@@ -24,3 +24,6 @@ DGEMM_BETA = dgemm_beta_skylakex.c
 
 CGEMMKERNEL    =  cgemm_kernel_8x2_skylakex.c
 ZGEMMKERNEL    =  zgemm_kernel_4x2_skylakex.c
+
+CSCALKERNEL    = ../arm/zscal.c
+ZSCALKERNEL    = ../arm/zscal.c
