This testcase tests that with -mcpu=power8 we do not generate any
mtvsr* instructions, and we do the copy with {l,st}xvd2x.
This currently fails with -m32. That is an RA problem; I'll open a
new PR for that.
Committing.
2019-07-08 Segher Boessenkool <seg...@kernel.crashing.org>
gcc/testsuite/
PR rtl-optimization/88233
* gcc.target/powerpc/pr88233.c: New testcase.
---
gcc/testsuite/gcc.target/powerpc/pr88233.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/powerpc/pr88233.c
diff --git a/gcc/testsuite/gcc.target/powerpc/pr88233.c
b/gcc/testsuite/gcc.target/powerpc/pr88233.c
new file mode 100644
index 0000000..fa47b57
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/pr88233.c
@@ -0,0 +1,13 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -mcpu=power8" } */
+
+typedef struct { double a[2]; } A;
+A
+foo (const A *a)
+{
+ return *a;
+}
+
+/* { dg-final { scan-assembler-not {\mmtvsr} } } */
+/* { dg-final { scan-assembler-times {\mlxvd2x\M} 1 } } */
+/* { dg-final { scan-assembler-times {\mstxvd2x\M} 1 } } */
--
1.8.3.1
