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[NFC][FMV] Add tests to demonstrate feature priorities.
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Adds tests showing that we select function version according
to the highest feature priority. This will make the changes
introduced by llvm#79316 more evident.
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@labrinea
labrinea committed Jan 25, 2024
1 parent ca8605a commit 07719ca
Showing 1 changed file with 68 additions and 2 deletions.
70 changes: 68 additions & 2 deletions clang/test/CodeGen/attr-target-version.c
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Original file line number Diff line number Diff line change
Expand Up @@ -36,6 +36,10 @@ inline int __attribute__((target_version("sve2-aes+sve2-sha3"))) fmv_inline(void
inline int __attribute__((target_version("sve2+sve2-pmull128+sve2-bitperm"))) fmv_inline(void) { return 9; }
inline int __attribute__((target_version("sve2-sm4+memtag2"))) fmv_inline(void) { return 10; }
inline int __attribute__((target_version("memtag3+rcpc3+mops"))) fmv_inline(void) { return 11; }
inline int __attribute__((target_version("aes+dotprod"))) fmv_inline(void) { return 13; }
inline int __attribute__((target_version("simd+fp16fml"))) fmv_inline(void) { return 14; }
inline int __attribute__((target_version("fp+sm4"))) fmv_inline(void) { return 15; }
inline int __attribute__((target_version("lse+rdm"))) fmv_inline(void) { return 16; }
inline int __attribute__((target_version("default"))) fmv_inline(void) { return 3; }

__attribute__((target_version("ls64"))) int fmv_e(void);
Expand Down Expand Up @@ -359,6 +363,38 @@ int hoo(void) {
// CHECK: resolver_return21:
// 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: [[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: 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: [[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: 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: [[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: 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: [[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: resolver_else30:
// CHECK-NEXT: ret ptr @fmv_inline.default
//
//
Expand Down Expand Up @@ -616,6 +652,34 @@ int hoo(void) {
//
//
// CHECK: Function Attrs: noinline nounwind optnone
// CHECK-LABEL: define {{[^@]+}}@fmv_inline._MdotprodMaes
// CHECK-SAME: () #[[ATTR6]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: ret i32 13
//
//
// CHECK: Function Attrs: noinline nounwind optnone
// CHECK-LABEL: define {{[^@]+}}@fmv_inline._Mfp16fmlMsimd
// CHECK-SAME: () #[[ATTR7]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: ret i32 14
//
//
// CHECK: Function Attrs: noinline nounwind optnone
// CHECK-LABEL: define {{[^@]+}}@fmv_inline._Msm4Mfp
// 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-SAME: () #[[ATTR25:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: ret i32 16
//
//
// CHECK: Function Attrs: noinline nounwind optnone
// CHECK-LABEL: define {{[^@]+}}@fmv_inline.default
// CHECK-SAME: () #[[ATTR2]] {
// CHECK-NEXT: entry:
Expand All @@ -624,7 +688,7 @@ int hoo(void) {
//
// CHECK: Function Attrs: noinline nounwind optnone
// CHECK-LABEL: define {{[^@]+}}@fmv_d._Msb
// CHECK-SAME: () #[[ATTR24:[0-9]+]] {
// CHECK-SAME: () #[[ATTR26:[0-9]+]] {
// CHECK-NEXT: entry:
// CHECK-NEXT: ret i32 0
//
Expand Down Expand Up @@ -769,7 +833,9 @@ int hoo(void) {
// CHECK: attributes #[[ATTR21]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fp-armv8,+fullfp16,+ls64,+neon,+sve,+sve2,+sve2-aes,+sve2-bitperm" }
// CHECK: attributes #[[ATTR22]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fp-armv8,+fullfp16,+ls64,+mte,+neon,+sve,+sve2,+sve2-sm4" }
// CHECK: attributes #[[ATTR23]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fullfp16,+ls64,+mops,+mte,+rcpc,+rcpc3" }
// CHECK: attributes #[[ATTR24]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fullfp16,+ls64,+sb" }
// CHECK: attributes #[[ATTR24]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fp-armv8,+fullfp16,+ls64,+neon,+sm4" }
// CHECK: attributes #[[ATTR25]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fp-armv8,+fullfp16,+ls64,+lse,+neon,+rdm" }
// CHECK: attributes #[[ATTR26]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="+fullfp16,+ls64,+sb" }
//.
// CHECK-NOFMV: attributes #[[ATTR0]] = { noinline nounwind optnone "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="-fmv" }
// CHECK-NOFMV: attributes #[[ATTR1:[0-9]+]] = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-features"="-fmv" }
Expand Down

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