On 8/8/23 13:24, Edwin Lu wrote:
diff --git a/gcc/testsuite/gcc.target/riscv/attribute-1.c
b/gcc/testsuite/gcc.target/riscv/attribute-1.c
index bc919c586b6..4b077c980a4 100644
--- a/gcc/testsuite/gcc.target/riscv/attribute-1.c
+++ b/gcc/testsuite/gcc.target/riscv/attribute-1.c
@@ -2,5 +2,20 @@
/* { dg-options "-mriscv-attribute" } */
int foo()
{
+
Maybe add a comment that in absence of -m[no-]strict-align, we use the
cpu tune param -> slow_unaligned_access and that default mcpu is rocket
which has that set to _slow.
+#if defined(__riscv_unaligned_avoid)
+#error "__riscv_unaligned_avoid is unexpectedly set"
+#endif
Lets first check what is really expected.
#if !defined (_slow) #error
+
+/* Check __riscv_unaligned_slow xor __riscv_unaligned_fast is set. */
+#if !defined(__riscv_unaligned_slow) && !defined(__riscv_unaligned_fast)
+#error "either __riscv_unaligned_slow or__riscv_unaligned_fast is not set"
+#endif
+
+#if defined(__riscv_unaligned_slow) && defined(__riscv_unaligned_fast)
+#error "both __riscv_unaligned_slow and__riscv_unaligned_fast are set"
+#endif
+
I think we can simplify this a bit (sorry I if wasn't clear enough in
our off-list discussions).
We now need to ensure that unexpected toggles are NOT defined: #if
defined(_avoid) || defined(_fast) #error
I don't think we need to check for the combinations as that is covered
by first one and this.
While separate #error prints for 2 failures are ideal, personally it
feels excessive given that the current implementation will only ever
generate 1 of them. If a future code change breaks that assumption, the
onus is on that change to fix/update the errors.
+return 0;
}
/* { dg-final { scan-assembler ".attribute arch" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/attribute-4.c
b/gcc/testsuite/gcc.target/riscv/attribute-4.c
index 7c565c4963e..c505dbae2aa 100644
--- a/gcc/testsuite/gcc.target/riscv/attribute-4.c
+++ b/gcc/testsuite/gcc.target/riscv/attribute-4.c
@@ -2,5 +2,19 @@
/* { dg-options "-mriscv-attribute -mstrict-align" } */
int foo()
{
+
+#if !defined(__riscv_unaligned_avoid)
+#error "__riscv_unaligned_avoid is not set"
+#endif
+
+#if defined(__riscv_unaligned_fast)
+#error "__riscv_unaligned_fast is unexpectedly set"
+#endif
+
+#if defined(__riscv_unaligned_slow)
+#error "__riscv_unaligned_slow is unexpectedly set"
+#endif
+
+ return 0;
}
/* { dg-final { scan-assembler ".attribute unaligned_access, 0" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/attribute-5.c
b/gcc/testsuite/gcc.target/riscv/attribute-5.c
index ee9cf693be6..45afa6c464d 100644
--- a/gcc/testsuite/gcc.target/riscv/attribute-5.c
+++ b/gcc/testsuite/gcc.target/riscv/attribute-5.c
@@ -2,5 +2,20 @@
/* { dg-options "-mriscv-attribute -mno-strict-align" } */
int foo()
{
+
+#if defined(__riscv_unaligned_avoid)
+#error "__riscv_unaligned_avoid is unexpectedly set"
+#endif
+
+/* Check __riscv_unaligned_slow xor __riscv_unaligned_fast is set. */
+#if !defined(__riscv_unaligned_slow) && !defined(__riscv_unaligned_fast)
+#error "either __riscv_unaligned_slow or__riscv_unaligned_fast is not set"
+#endif
+
+#if defined(__riscv_unaligned_slow) && defined(__riscv_unaligned_fast)
+#error "both __riscv_unaligned_slow and__riscv_unaligned_fast are set"
+#endif
Same as my comment for attribute-1. Please recheck all of them.
+
+return 0;
}
/* { dg-final { scan-assembler ".attribute unaligned_access, 1" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/predef-align-1.c
b/gcc/testsuite/gcc.target/riscv/predef-align-1.c
new file mode 100644
index 000..2a889dd9284
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/predef-align-1.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-mtune=thead-c906" } */
+
+int main() {
+
+/* thead-c906 default is cpu tune param unaligned access fast */
+#if !defined(__riscv_unaligned_fast)
+#error "__riscv_unaligned_fast is not set"
+#endif
+
+#if defined(__riscv_unaligned_slow)
+#error "__riscv_unaligned_slow is unexpectedly set"
+#endif
+
+#if defined(__risvc_unaligned_avoid)
+#error "__riscv_unaligned_avoid is unexpectedly set"
+#endif
+
+ return 0;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/predef-align-2.c
b/gcc/testsuite/gcc.target/riscv/predef-align-2.c
new file mode 100644
index 000..76cbce60d9f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/predef-align-2.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-mtune=thead-c906 -mstrict-align" } */
+
+int main() {
+
+#if !defined(__riscv_unaligned_avoid)
+#error "__riscv_unaligned_avoid is not set"
+#endif
+
+#if defined(__riscv_unaligned_fast)
+#error "__riscv_unaligned_fast is unexpectedly set"
+#endif
+
+#if defined(__riscv_unaligned_slow)
+#error "__riscv_unaligned_slow is unexpectedly set"
+#endif
+
+ return 0;
+}
diff --git a/gcc/testsuite/gcc.target/riscv/predef-align-3.c
b/gcc/testsuite/gcc.target/riscv/predef-align-3.c
new file mode 100644
index 000..f8caef48180
---
