Add a test for dejagnu to determine if execution of MMA instructions is
supported in the test environment. Add an execution test to make sure
that __builtin_cpu_supports("mma") is true if we can execute MMA
instructions.
OK for trunk and backport to 10?
Thanks!
Aaron
gcc/testsuite/
* lib/target-supports.exp (check_ppc_mma_hw_available):
New function.
(is-effective-target): Add ppc_mma_hw.
(is-effective-target-keyword): Add ppc_mma_hw.
* gcc.target/powerpc/mma-supported.c: New file.
* gcc.target/powerpc/mma-single-test.c: Require ppc_mma_hw.
* gcc.target/powerpc/mma-double-test.c: Require ppc_mma_hw.
---
.../gcc.target/powerpc/mma-double-test.c | 1 +
.../gcc.target/powerpc/mma-single-test.c | 1 +
.../gcc.target/powerpc/mma-supported.c | 24 +++++++++++++++++
gcc/testsuite/lib/target-supports.exp | 27 +++++++++++++++++++
4 files changed, 53 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/powerpc/mma-supported.c
diff --git a/gcc/testsuite/gcc.target/powerpc/mma-double-test.c
b/gcc/testsuite/gcc.target/powerpc/mma-double-test.c
index 9ba0010978f..ac84ae30004 100755
--- a/gcc/testsuite/gcc.target/powerpc/mma-double-test.c
+++ b/gcc/testsuite/gcc.target/powerpc/mma-double-test.c
@@ -1,5 +1,6 @@
/* { dg-do run } */
/* { dg-require-effective-target power10_hw } */
+/* { dg-require-effective-target ppc_mma_hw } */
/* { dg-options "-mdejagnu-cpu=power10 -O2" } */
#include <stdio.h>
diff --git a/gcc/testsuite/gcc.target/powerpc/mma-single-test.c
b/gcc/testsuite/gcc.target/powerpc/mma-single-test.c
index aa71fa7f0af..15369a64025 100755
--- a/gcc/testsuite/gcc.target/powerpc/mma-single-test.c
+++ b/gcc/testsuite/gcc.target/powerpc/mma-single-test.c
@@ -1,5 +1,6 @@
/* { dg-do run } */
/* { dg-require-effective-target power10_hw } */
+/* { dg-require-effective-target ppc_mma_hw } */
/* { dg-options "-mdejagnu-cpu=power10 -O2" } */
#include <stdio.h>
diff --git a/gcc/testsuite/gcc.target/powerpc/mma-supported.c
b/gcc/testsuite/gcc.target/powerpc/mma-supported.c
new file mode 100644
index 00000000000..64943e362a8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/mma-supported.c
@@ -0,0 +1,24 @@
+/* { dg-do run } */
+/* { dg-require-effective-target ppc_mma_hw } */
+/* { dg-options "-mdejagnu-cpu=power10 -O2" } */
+
+/* This test will only run when the ppc_mma_hw test passes. If that
+ test passes, then we expect to see that mma feature is supported.
+ If this is not the case, then the test environment has problems. */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main (int argc, char *argv[])
+{
+ int ret = 0;
+#ifdef __BUILTIN_CPU_SUPPORTS__
+ if ( !__builtin_cpu_supports ("mma"))
+ {
+ printf ("Error: __builtin_cpu_supports says mma not supported, but
ppc_mma_hw test passed.\n");
+ ret++;
+ }
+#endif
+ return ret;
+}
diff --git a/gcc/testsuite/lib/target-supports.exp
b/gcc/testsuite/lib/target-supports.exp
index aeb0351073d..04f6db53eca 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -2234,6 +2234,31 @@ proc check_power10_hw_available { } {
}]
}
+# Return 1 if the target supports executing MMA instructions, 0 otherwise.
+# Cache the result. It is assumed that if a simulator does not support the
+# MMA instructions, that it will generate an error and this test will fail.
+
+proc check_ppc_mma_hw_available { } {
+ return [check_cached_effective_target ppc_mma_hw_available {
+ check_runtime_nocache ppc_mma_hw_available {
+ #include <altivec.h>
+ typedef double v4sf_t __attribute__ ((vector_size (16)));
+
+ int main()
+ {
+ __vector_quad acc0;
+ v4sf_t result[4];
+ result[0][0] = 1.0;
+ __builtin_mma_xxsetaccz (&acc0);
+ __builtin_mma_disassemble_acc (result, &acc0);
+ if ( result[0][0] != 0.0 )
+ return 1;
+ return 0;
+ }
+ } "-mcpu=power10"
+ }]
+}
+
# Return 1 if the target supports executing __float128 on PowerPC via software
# emulation, 0 otherwise. Cache the result.
@@ -7836,6 +7861,7 @@ proc is-effective-target { arg } {
"gc_sections" { set selected [check_gc_sections_available] }
"cxa_atexit" { set selected [check_cxa_atexit_available] }
"power10_hw" { set selected [check_power10_hw_available] }
+ "ppc_mma_hw" { set selected [check_ppc_mma_hw_available] }
default { error "unknown effective target keyword `$arg'" }
}
}
@@ -7865,6 +7891,7 @@ proc is-effective-target-keyword { arg } {
"named_sections" { return 1 }
"gc_sections" { return 1 }
"cxa_atexit" { return 1 }
+ "ppc_mma_hw" { return 1 }
default { return 0 }
}
}
--
2.17.1
