[FMV] Change feature priorities according to ACLE.

This patch follows the latest ACLE specification as shown in PR
ARM-software/acle#279. It adjusts the
priorities for FEAT_DOTPROD, FEAT_SM4, FEAT_FP16FML, FEAT_RDM.

Author: labrinea

clang/test/CodeGen/attr-target-version.c

@@ -364,36 +364,36 @@ int hoo(void) {
 // CHECK-NEXT:    ret ptr @fmv_inline._Mdpb2Mjscvt
 // CHECK:       resolver_else22:
 // CHECK-NEXT:    [[TMP48:%.*]] = load i64, ptr @__aarch64_cpu_features, align 8
-// CHECK-NEXT:    [[TMP49:%.*]] = and i64 [[TMP48]], 16400
-// CHECK-NEXT:    [[TMP50:%.*]] = icmp eq i64 [[TMP49]], 16400
+// CHECK-NEXT:    [[TMP49:%.*]] = and i64 [[TMP48]], 8
+// CHECK-NEXT:    [[TMP50:%.*]] = icmp eq i64 [[TMP49]], 8
 // CHECK-NEXT:    [[TMP51:%.*]] = and i1 true, [[TMP50]]
 // CHECK-NEXT:    br i1 [[TMP51]], label [[RESOLVER_RETURN23:%.*]], label [[RESOLVER_ELSE24:%.*]]
 // CHECK:       resolver_return23:
-// CHECK-NEXT:    ret ptr @fmv_inline._MdotprodMaes
+// CHECK-NEXT:    ret ptr @fmv_inline._MsimdMfp16fml
 // CHECK:       resolver_else24:
 // CHECK-NEXT:    [[TMP52:%.*]] = load i64, ptr @__aarch64_cpu_features, align 8
-// CHECK-NEXT:    [[TMP53:%.*]] = and i64 [[TMP52]], 8
-// CHECK-NEXT:    [[TMP54:%.*]] = icmp eq i64 [[TMP53]], 8
+// CHECK-NEXT:    [[TMP53:%.*]] = and i64 [[TMP52]], 16400
+// CHECK-NEXT:    [[TMP54:%.*]] = icmp eq i64 [[TMP53]], 16400
 // CHECK-NEXT:    [[TMP55:%.*]] = and i1 true, [[TMP54]]
 // CHECK-NEXT:    br i1 [[TMP55]], label [[RESOLVER_RETURN25:%.*]], label [[RESOLVER_ELSE26:%.*]]
 // CHECK:       resolver_return25:
-// CHECK-NEXT:    ret ptr @fmv_inline._Mfp16fmlMsimd
+// CHECK-NEXT:    ret ptr @fmv_inline._MdotprodMaes
 // CHECK:       resolver_else26:
 // CHECK-NEXT:    [[TMP56:%.*]] = load i64, ptr @__aarch64_cpu_features, align 8
-// CHECK-NEXT:    [[TMP57:%.*]] = and i64 [[TMP56]], 32
-// CHECK-NEXT:    [[TMP58:%.*]] = icmp eq i64 [[TMP57]], 32
+// CHECK-NEXT:    [[TMP57:%.*]] = and i64 [[TMP56]], 192
+// CHECK-NEXT:    [[TMP58:%.*]] = icmp eq i64 [[TMP57]], 192
 // CHECK-NEXT:    [[TMP59:%.*]] = and i1 true, [[TMP58]]
 // CHECK-NEXT:    br i1 [[TMP59]], label [[RESOLVER_RETURN27:%.*]], label [[RESOLVER_ELSE28:%.*]]
 // CHECK:       resolver_return27:
-// CHECK-NEXT:    ret ptr @fmv_inline._Msm4Mfp
+// CHECK-NEXT:    ret ptr @fmv_inline._MlseMrdm
 // CHECK:       resolver_else28:
 // CHECK-NEXT:    [[TMP60:%.*]] = load i64, ptr @__aarch64_cpu_features, align 8
-// CHECK-NEXT:    [[TMP61:%.*]] = and i64 [[TMP60]], 192
-// CHECK-NEXT:    [[TMP62:%.*]] = icmp eq i64 [[TMP61]], 192
+// CHECK-NEXT:    [[TMP61:%.*]] = and i64 [[TMP60]], 32
+// CHECK-NEXT:    [[TMP62:%.*]] = icmp eq i64 [[TMP61]], 32
 // CHECK-NEXT:    [[TMP63:%.*]] = and i1 true, [[TMP62]]
 // CHECK-NEXT:    br i1 [[TMP63]], label [[RESOLVER_RETURN29:%.*]], label [[RESOLVER_ELSE30:%.*]]
 // CHECK:       resolver_return29:
-// CHECK-NEXT:    ret ptr @fmv_inline._MrdmMlse
+// CHECK-NEXT:    ret ptr @fmv_inline._MfpMsm4
 // CHECK:       resolver_else30:
 // CHECK-NEXT:    ret ptr @fmv_inline.default
 //
@@ -659,21 +659,21 @@ int hoo(void) {
 //
 //
 // CHECK: Function Attrs: noinline nounwind optnone
-// CHECK-LABEL: define {{[^@]+}}@fmv_inline._Mfp16fmlMsimd
+// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MsimdMfp16fml
 // CHECK-SAME: () #[[ATTR7]] {
 // CHECK-NEXT:  entry:
 // CHECK-NEXT:    ret i32 14
 //
 //
 // CHECK: Function Attrs: noinline nounwind optnone
-// CHECK-LABEL: define {{[^@]+}}@fmv_inline._Msm4Mfp
+// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MfpMsm4
 // CHECK-SAME: () #[[ATTR24:[0-9]+]] {
 // CHECK-NEXT:  entry:
 // CHECK-NEXT:    ret i32 15
 //
 //
 // CHECK: Function Attrs: noinline nounwind optnone
-// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MrdmMlse
+// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MlseMrdm
 // CHECK-SAME: () #[[ATTR25:[0-9]+]] {
 // CHECK-NEXT:  entry:
 // CHECK-NEXT:    ret i32 16

llvm/include/llvm/TargetParser/AArch64TargetParser.h

@@ -222,7 +222,7 @@ inline constexpr ExtensionInfo Extensions[] = {
     {"d128", AArch64::AEK_D128, "+d128", "-d128", FEAT_INIT, "", 0},
     {"dgh", AArch64::AEK_NONE, {}, {}, FEAT_DGH, "", 260},
     {"dit", AArch64::AEK_NONE, {}, {}, FEAT_DIT, "+dit", 180},
-    {"dotprod", AArch64::AEK_DOTPROD, "+dotprod", "-dotprod", FEAT_DOTPROD, "+dotprod,+fp-armv8,+neon", 50},
+    {"dotprod", AArch64::AEK_DOTPROD, "+dotprod", "-dotprod", FEAT_DOTPROD, "+dotprod,+fp-armv8,+neon", 104},
     {"dpb", AArch64::AEK_NONE, {}, {}, FEAT_DPB, "+ccpp", 190},
     {"dpb2", AArch64::AEK_NONE, {}, {}, FEAT_DPB2, "+ccpp,+ccdp", 200},
     {"ebf16", AArch64::AEK_NONE, {}, {}, FEAT_EBF16, "+bf16", 290},
@@ -233,7 +233,7 @@ inline constexpr ExtensionInfo Extensions[] = {
     {"flagm2", AArch64::AEK_NONE, {}, {}, FEAT_FLAGM2, "+flagm,+altnzcv", 30},
     {"fp", AArch64::AEK_FP, "+fp-armv8", "-fp-armv8", FEAT_FP, "+fp-armv8,+neon", 90},
     {"fp16", AArch64::AEK_FP16, "+fullfp16", "-fullfp16", FEAT_FP16, "+fullfp16,+fp-armv8,+neon", 170},
-    {"fp16fml", AArch64::AEK_FP16FML, "+fp16fml", "-fp16fml", FEAT_FP16FML, "+fp16fml,+fullfp16,+fp-armv8,+neon", 40},
+    {"fp16fml", AArch64::AEK_FP16FML, "+fp16fml", "-fp16fml", FEAT_FP16FML, "+fp16fml,+fullfp16,+fp-armv8,+neon", 175},
     {"frintts", AArch64::AEK_NONE, {}, {}, FEAT_FRINTTS, "+fptoint", 250},
     {"hbc", AArch64::AEK_HBC, "+hbc", "-hbc", FEAT_INIT, "", 0},
     {"i8mm", AArch64::AEK_I8MM, "+i8mm", "-i8mm", FEAT_I8MM, "+i8mm", 270},
@@ -259,15 +259,15 @@ inline constexpr ExtensionInfo Extensions[] = {
     {"rcpc", AArch64::AEK_RCPC, "+rcpc", "-rcpc", FEAT_RCPC, "+rcpc", 230},
     {"rcpc2", AArch64::AEK_NONE, {}, {}, FEAT_RCPC2, "+rcpc", 240},
     {"rcpc3", AArch64::AEK_RCPC3, "+rcpc3", "-rcpc3", FEAT_RCPC3, "+rcpc,+rcpc3", 241},
-    {"rdm", AArch64::AEK_RDM, "+rdm", "-rdm", FEAT_RDM, "+rdm,+fp-armv8,+neon", 70},
+    {"rdm", AArch64::AEK_RDM, "+rdm", "-rdm", FEAT_RDM, "+rdm,+fp-armv8,+neon", 108},
     {"rng", AArch64::AEK_RAND, "+rand", "-rand", FEAT_RNG, "+rand", 10},
     {"rpres", AArch64::AEK_NONE, {}, {}, FEAT_RPRES, "", 300},
     {"sb", AArch64::AEK_SB, "+sb", "-sb", FEAT_SB, "+sb", 470},
     {"sha1", AArch64::AEK_NONE, {}, {}, FEAT_SHA1, "+fp-armv8,+neon", 120},
     {"sha2", AArch64::AEK_SHA2, "+sha2", "-sha2", FEAT_SHA2, "+sha2,+fp-armv8,+neon", 130},
     {"sha3", AArch64::AEK_SHA3, "+sha3", "-sha3", FEAT_SHA3, "+sha3,+sha2,+fp-armv8,+neon", 140},
     {"simd", AArch64::AEK_SIMD, "+neon", "-neon", FEAT_SIMD, "+fp-armv8,+neon", 100},
-    {"sm4", AArch64::AEK_SM4, "+sm4", "-sm4", FEAT_SM4, "+sm4,+fp-armv8,+neon", 60},
+    {"sm4", AArch64::AEK_SM4, "+sm4", "-sm4", FEAT_SM4, "+sm4,+fp-armv8,+neon", 106},
     {"sme-f16f16", AArch64::AEK_SMEF16F16, "+sme-f16f16", "-sme-f16f16", FEAT_INIT, "", 0},
     {"sme-f64f64", AArch64::AEK_SMEF64F64, "+sme-f64f64", "-sme-f64f64", FEAT_SME_F64, "+sme,+sme-f64f64,+bf16", 560},
     {"sme-i16i64", AArch64::AEK_SMEI16I64, "+sme-i16i64", "-sme-i16i64", FEAT_SME_I64, "+sme,+sme-i16i64,+bf16", 570},