[PATCH 3/3] Add -mcpu=power11 tests

[Michael Meissner <meissner@linux.ibm.com>]

This patch adds some simple tests for -mcpu=power11 support.  In order to run
these tests, you need an assembler that supports the appropriate option for
supporting the Power11 processor (-mpower11 under Linux or -mpwr11 under AIX).

I have tested this patch on a little endian power10 system and a big endian
power9 system using the latest binutils which includes support for power11.
There were no regressions, and the 3 power11 tests added ran on both systems.
Can I check this patch into GCC 15 when it opens up for general patches?

2024-03-18  Michael Meissner  <meissner@linux.ibm.com>

gcc/testsuite/

	* gcc.target/powerpc/power11-1.c: New test.
	* gcc.target/powerpc/power11-2.c: Likewise.
	* gcc.target/powerpc/power11-3.c: Likewise.
	* lib/target-supports.exp (check_effective_target_power11_ok): Add new
	effective target.
---
 gcc/testsuite/gcc.target/powerpc/power11-1.c | 13 +++++++++++++
 gcc/testsuite/gcc.target/powerpc/power11-2.c | 20 ++++++++++++++++++++
 gcc/testsuite/gcc.target/powerpc/power11-3.c | 10 ++++++++++
 gcc/testsuite/lib/target-supports.exp        | 17 +++++++++++++++++
 4 files changed, 60 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/powerpc/power11-1.c
 create mode 100644 gcc/testsuite/gcc.target/powerpc/power11-2.c
 create mode 100644 gcc/testsuite/gcc.target/powerpc/power11-3.c

diff --git a/gcc/testsuite/gcc.target/powerpc/power11-1.c b/gcc/testsuite/gcc.target/powerpc/power11-1.c
new file mode 100644
index 00000000000..6a2e802eedf
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/power11-1.c
@@ -0,0 +1,13 @@
+/* { dg-do compile { target powerpc*-*-* } } */
+/* { dg-require-effective-target power11_ok } */
+/* { dg-options "-mdejagnu-cpu=power11 -O2" } */
+
+/* Basic check to see if the compiler supports -mcpu=power11.  */
+
+#ifndef _ARCH_PWR11
+#error "-mcpu=power11 is not supported"
+#endif
+
+void foo (void)
+{
+}
diff --git a/gcc/testsuite/gcc.target/powerpc/power11-2.c b/gcc/testsuite/gcc.target/powerpc/power11-2.c
new file mode 100644
index 00000000000..7b9904c1d29
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/power11-2.c
@@ -0,0 +1,20 @@
+/* { dg-do compile { target powerpc*-*-* } } */
+/* { dg-require-effective-target power11_ok } */
+/* { dg-options "-O2" } */
+
+/* Check if we can set the power11 target via a target attribute.  */
+
+__attribute__((__target__("cpu=power9")))
+void foo_p9 (void)
+{
+}
+
+__attribute__((__target__("cpu=power10")))
+void foo_p10 (void)
+{
+}
+
+__attribute__((__target__("cpu=power11")))
+void foo_p11 (void)
+{
+}
diff --git a/gcc/testsuite/gcc.target/powerpc/power11-3.c b/gcc/testsuite/gcc.target/powerpc/power11-3.c
new file mode 100644
index 00000000000..9b2d643cc0f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/powerpc/power11-3.c
@@ -0,0 +1,10 @@
+/* { dg-do compile { target powerpc*-*-* } }  */
+/* { dg-require-effective-target power11_ok } */
+/* { dg-options "-mdejagnu-cpu=power8 -O2" }  */
+
+/* Check if we can set the power11 target via a target_clones attribute.  */
+
+__attribute__((__target_clones__("cpu=power11,cpu=power9,default")))
+void foo (void)
+{
+}
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 467b539b20d..be80494be80 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -7104,6 +7104,23 @@ proc check_effective_target_power10_ok { } {
     }
 }
 
+# Return 1 if this is a PowerPC target supporting -mcpu=power11.
+
+proc check_effective_target_power11_ok { } {
+    if { ([istarget powerpc*-*-*]) } {
+	return [check_no_compiler_messages power11_ok object {
+	    int main (void) {
+	        #ifndef _ARCH_PWR11
+		#error "-mcpu=power11 is not supported"
+		#endif
+		return 0;
+	    }
+	} "-mcpu=power11"]
+    } else {
+	return 0
+    }
+}
+
 # Return 1 if this is a PowerPC target supporting -mfloat128 via either
 # software emulation on power7/power8 systems or hardware support on power9.
 
-- 
2.44.0


-- 
Michael Meissner, IBM
PO Box 98, Ayer, Massachusetts, USA, 01432
email: meissner@linux.ibm.com