Hello,
This attached patch adds support to the scalar form of FABD
instruction along with the compile & execute tests for the same.
Regression tested on aarch64-none-elf with no issues.
OK?
Regards
VP
---
gcc/ChangeLog
2013-05-02 Vidya Praveen <vidyaprav...@arm.com>
* config/aarch64/aarch64-simd.md (*fabd_scalar<mode>3): Support
scalar form of FABD instruction.
gcc/testsuite/ChangeLog
2013-05-02 Vidya Praveen <vidyaprav...@arm.com>
* gcc.target/aarch64/fabd.c: New file.diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md
index 5862d26..e5fc032 100644
--- a/gcc/config/aarch64/aarch64-simd.md
+++ b/gcc/config/aarch64/aarch64-simd.md
@@ -556,6 +556,17 @@
(set_attr "simd_mode" "<MODE>")]
)
+(define_insn "*fabd_scalar<mode>3"
+ [(set (match_operand:GPF 0 "register_operand" "=w")
+ (abs:GPF (minus:GPF
+ (match_operand:GPF 1 "register_operand" "w")
+ (match_operand:GPF 2 "register_operand" "w"))))]
+ "TARGET_SIMD"
+ "fabd\t%<s>0, %<s>1, %<s>2"
+ [(set_attr "simd_type" "simd_fabd")
+ (set_attr "mode" "<MODE>")]
+)
+
(define_insn "and<mode>3"
[(set (match_operand:VDQ 0 "register_operand" "=w")
(and:VDQ (match_operand:VDQ 1 "register_operand" "w")
diff --git a/gcc/testsuite/gcc.target/aarch64/fabd.c b/gcc/testsuite/gcc.target/aarch64/fabd.c
new file mode 100644
index 0000000..7206d5e
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/fabd.c
@@ -0,0 +1,38 @@
+/* { dg-do run } */
+/* { dg-options "-O1 -fno-inline --save-temps" } */
+
+extern double fabs (double);
+extern float fabsf (float);
+extern void abort ();
+extern void exit (int);
+
+void
+fabd_d (double x, double y, double d)
+{
+ if ((fabs (x - y) - d) > 0.00001)
+ abort ();
+}
+
+/* { dg-final { scan-assembler "fabd\td\[0-9\]+" } } */
+
+void
+fabd_f (float x, float y, float d)
+{
+ if ((fabsf (x - y) - d) > 0.00001)
+ abort ();
+}
+
+/* { dg-final { scan-assembler "fabd\ts\[0-9\]+" } } */
+
+int
+main ()
+{
+ fabd_d (10.0, 5.0, 5.0);
+ fabd_d (5.0, 10.0, 5.0);
+ fabd_f (10.0, 5.0, 5.0);
+ fabd_f (5.0, 10.0, 5.0);
+
+ return 0;
+}
+
+/* { dg-final { cleanup-saved-temps } } */
