aarch64: Update fp8 dependencies

We agreed with LLVM developers to not enforce the architectural
dependencies between fp8 multiplication features, and they have already
been removed from LLVM and Binutils.  Remove them from GCC as well.

gcc/ChangeLog:

	* config/aarch64/aarch64-option-extensions.def
	(SSVE_FP8FMA): Adjust formatting.
	(FP8DOT4): Replace FP8FMA dependency with FP8.
	(SSVE_FP8DOT4): Replace SSVE_FP8FMA dependency with SME2+FP8.
	(FP8DOT2): Replace FP8DOT4 dependency with FP8.
	(SSVE_FP8DOT2): Replace SSVE_FP8DOT4 dependency with SME2+FP8.

gcc/testsuite/ChangeLog:

	* gcc.target/aarch64/pragma_cpp_predefs_4.c: Adjust expected
	defines.
	* gcc.target/aarch64/simd/vmla_lane_indices_1.c: Modify target
	pragmas.
	* gcc.target/aarch64/sve/acle/general-c/ternary_mfloat8_1.c:
	Ditto.
	* gcc.target/aarch64/sve/acle/general-c/ternary_mfloat8_lane_group_selection_1.c:
	Ditto.
	* gcc.target/aarch64/sve2/acle/asm/dot_lane_mf8.c: Ditto.
	* gcc.target/aarch64/sve2/acle/asm/dot_mf8.c: Ditto.

Author: andrewcarlotti

gcc/config/aarch64/aarch64-option-extensions.def

@@ -261,17 +261,17 @@ AARCH64_OPT_EXTENSION("fp8", FP8, (SIMD), (), (), "f8cvt")
 
 AARCH64_OPT_EXTENSION("fp8fma", FP8FMA, (FP8), (), (), "f8fma")
 
-AARCH64_OPT_EXTENSION("ssve-fp8fma", SSVE_FP8FMA, (SME2,FP8), (), (), "smesf8fma")
+AARCH64_OPT_EXTENSION("ssve-fp8fma", SSVE_FP8FMA, (SME2, FP8), (), (), "smesf8fma")
 
 AARCH64_OPT_EXTENSION("faminmax", FAMINMAX, (SIMD), (), (), "faminmax")
 
-AARCH64_OPT_EXTENSION("fp8dot4", FP8DOT4, (FP8FMA), (), (), "f8dp4")
+AARCH64_OPT_EXTENSION("fp8dot4", FP8DOT4, (FP8), (), (), "f8dp4")
 
-AARCH64_OPT_EXTENSION("ssve-fp8dot4", SSVE_FP8DOT4, (SSVE_FP8FMA), (), (), "smesf8dp4")
+AARCH64_OPT_EXTENSION("ssve-fp8dot4", SSVE_FP8DOT4, (SME2, FP8), (), (), "smesf8dp4")
 
-AARCH64_OPT_EXTENSION("fp8dot2", FP8DOT2, (FP8DOT4), (), (), "f8dp2")
+AARCH64_OPT_EXTENSION("fp8dot2", FP8DOT2, (FP8), (), (), "f8dp2")
 
-AARCH64_OPT_EXTENSION("ssve-fp8dot2", SSVE_FP8DOT2, (SSVE_FP8DOT4), (), (), "smesf8dp2")
+AARCH64_OPT_EXTENSION("ssve-fp8dot2", SSVE_FP8DOT2, (SME2, FP8), (), (), "smesf8dp2")
 
 AARCH64_OPT_EXTENSION("lut", LUT, (SIMD), (), (), "lut")
 

gcc/testsuite/gcc.target/aarch64/pragma_cpp_predefs_4.c

@@ -292,7 +292,7 @@
 #ifndef __ARM_FEATURE_FP8
 #error Foo
 #endif
-#ifndef __ARM_FEATURE_FP8FMA
+#ifdef __ARM_FEATURE_FP8FMA
 #error Foo
 #endif
 #ifndef __ARM_FEATURE_FP8DOT4
@@ -306,10 +306,10 @@
 #ifndef __ARM_FEATURE_FP8
 #error Foo
 #endif
-#ifndef __ARM_FEATURE_FP8FMA
+#ifdef __ARM_FEATURE_FP8FMA
 #error Foo
 #endif
-#ifndef __ARM_FEATURE_FP8DOT4
+#ifdef __ARM_FEATURE_FP8DOT4
 #error Foo
 #endif
 #ifndef __ARM_FEATURE_FP8DOT2

gcc/testsuite/gcc.target/aarch64/simd/vmla_lane_indices_1.c

@@ -2,7 +2,7 @@
 
 #include "arm_neon.h"
 
-#pragma GCC target "+fp8dot4+fp8dot2"
+#pragma GCC target "+fp8fma"
 
 void
 test(float16x4_t f16, float16x8_t f16q, float32x2_t f32,

gcc/testsuite/gcc.target/aarch64/sve/acle/general-c/ternary_mfloat8_1.c

@@ -2,7 +2,7 @@
 
 #include <arm_sve.h>
 
-#pragma GCC target ("arch=armv8.2-a+sve2+fp8dot2")
+#pragma GCC target ("arch=armv8.2-a+sve2+fp8fma+fp8dot4+fp8dot2")
 
 void
 test (svfloat16_t f16, svmfloat8_t f8, fpm_t fpm, 

gcc/testsuite/gcc.target/aarch64/sve/acle/general-c/ternary_mfloat8_lane_group_selection_1.c

@@ -2,7 +2,7 @@
 
 #include <arm_sve.h>
 
-#pragma GCC target ("arch=armv8.2-a+ssve-fp8fma+ssve-fp8dot2")
+#pragma GCC target ("arch=armv8.2-a+ssve-fp8fma+ssve-fp8dot4+ssve-fp8dot2")
 
 void
 f1 (svfloat16_t f16, svmfloat8_t f8, fpm_t fpm, 

gcc/testsuite/gcc.target/aarch64/sve2/acle/asm/dot_lane_mf8.c

@@ -4,9 +4,9 @@
 
 #include "test_sve_acle.h"
 
-#pragma GCC target "+fp8dot2"
+#pragma GCC target "+fp8dot2+fp8dot4"
 #ifdef STREAMING_COMPATIBLE
-#pragma GCC target "+ssve-fp8dot2"
+#pragma GCC target "+ssve-fp8dot2+ssve-fp8dot4"
 #endif
 
 /*

gcc/testsuite/gcc.target/aarch64/sve2/acle/asm/dot_mf8.c

@@ -4,9 +4,9 @@
 
 #include "test_sve_acle.h"
 
-#pragma GCC target "+fp8dot2"
+#pragma GCC target "+fp8dot2+fp8dot4"
 #ifdef STREAMING_COMPATIBLE
-#pragma GCC target "+ssve-fp8dot2"
+#pragma GCC target "+ssve-fp8dot2+ssve-fp8dot4"
 #endif
 
 /*