This patch adds a test to make sure __float128 are passed and returned like
vector objects, and not as IBM extended double did.
This is the last subpatch of patch #7. I have bootstrapped the compiler with
all 16 subpatches installed, and there were no regressions. Is it ok to
install in the trunk?
2015-10-22 Michael Meissner <meiss...@linux.vnet.ibm.com>
* gcc.target/powerpc/float128-call.c: New test for -mfloat128 on
PowerPC.
--
Michael Meissner, IBM
IBM, M/S 2506R, 550 King Street, Littleton, MA 01460-6245, USA
email: meiss...@linux.vnet.ibm.com, phone: +1 (978) 899-4797
Index: gcc/testsuite/gcc.target/powerpc/float128-call.c
===================================================================
--- gcc/testsuite/gcc.target/powerpc/float128-call.c (revision 0)
+++ gcc/testsuite/gcc.target/powerpc/float128-call.c (revision 0)
@@ -0,0 +1,27 @@
+/* { dg-do compile { target { powerpc*-*-linux* } } } */
+/* { dg-skip-if "" { powerpc*-*-darwin* } { "*" } { "" } } */
+/* { dg-require-effective-target powerpc_vsx_ok } */
+/* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } {
"-mcpu=power7" } } */
+/* { dg-options "-O2 -mcpu=power7 -mfloat128 -mno-regnames" } */
+
+#ifndef __FLOAT128__
+#error "-mfloat128 is not supported."
+#endif
+
+#ifdef __LONG_DOUBLE_IEEE128__
+#define TYPE long double
+#define ONE 1.0L
+
+#else
+#define TYPE __float128
+#define ONE 1.0Q
+#endif
+
+/* Test to make sure vector registers are used for passing IEEE 128-bit
+ floating point values and returning them. Also make sure the 'q' suffix is
+ handled. */
+TYPE one (void) { return ONE; }
+void store (TYPE a, TYPE *p) { *p = a; }
+
+/* { dg-final { scan-assembler "lxvd2x 34" } } */
+/* { dg-final { scan-assembler "stxvd2x 34" } } */
