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27da15381c
GCC 12 (https://gcc.gnu.org/PR101696) allows __builtin_cpu_supports("x86-64") (and -v2 -v3 -v4). This patch ports the feature. * Add `FEATURE_X86_64_{BASELINE,V2,V3,V4}` to enum ProcessorFeatures, but keep CPU_FEATURE_MAX unchanged to make FeatureInfos/FeatureInfos_WithPLUS happy. * Change validateCpuSupports to allow `x86-64{,-v2,-v3,-v4}` * Change getCpuSupportsMask to return `std::array<uint32_t, 4>` where `x86-64{,-v2,-v3,-v4}` set bits `FEATURE_X86_64_{BASELINE,V2,V3,V4}`. * `target("x86-64")` and `cpu_dispatch(x86_64)` are invalid. Tested by commit 9de3b35ac9159d5bae6e6796cb91e4f877a07189 Close https://github.com/llvm/llvm-project/issues/59961 Reviewed By: pengfei Differential Revision: https://reviews.llvm.org/D158811
53 lines
2.0 KiB
C
53 lines
2.0 KiB
C
// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -emit-llvm < %s| FileCheck %s
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// Test that we have the structure definition, the gep offsets, the name of the
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// global, the bit grab, and the icmp correct.
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extern void a(const char *);
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// CHECK: @__cpu_model = external dso_local global { i32, i32, i32, [1 x i32] }
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// CHECK: @__cpu_features2 = external dso_local global [3 x i32]
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int main(void) {
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__builtin_cpu_init();
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// CHECK: call void @__cpu_indicator_init
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if (__builtin_cpu_supports("sse4.2"))
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a("sse4.2");
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// CHECK: [[LOAD:%[^ ]+]] = load i32, ptr getelementptr inbounds ({ i32, i32, i32, [1 x i32] }, ptr @__cpu_model, i32 0, i32 3, i32 0)
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// CHECK: [[AND:%[^ ]+]] = and i32 [[LOAD]], 256
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// CHECK: = icmp eq i32 [[AND]], 256
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if (__builtin_cpu_supports("gfni"))
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a("gfni");
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// CHECK: [[LOAD:%[^ ]+]] = load i32, ptr @__cpu_features2
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// CHECK: [[AND:%[^ ]+]] = and i32 [[LOAD]], 1
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// CHECK: = icmp eq i32 [[AND]], 1
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return 0;
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}
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// CHECK: declare dso_local void @__cpu_indicator_init()
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// CHECK-LABEL: define{{.*}} @baseline(
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// CHECK: [[LOAD:%.*]] = load i32, ptr getelementptr inbounds ([[[#]] x i32], ptr @__cpu_features2, i32 0, i32 1)
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// CHECK-NEXT: and i32 [[LOAD]], -2147483648
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int baseline() { return __builtin_cpu_supports("x86-64"); }
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// CHECK-LABEL: define{{.*}} @v2(
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// CHECK: [[LOAD:%.*]] = load i32, ptr getelementptr inbounds ([[[#]] x i32], ptr @__cpu_features2, i32 0, i32 2)
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// CHECK-NEXT: and i32 [[LOAD]], 1
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int v2() { return __builtin_cpu_supports("x86-64-v2"); }
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// CHECK-LABEL: define{{.*}} @v3(
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// CHECK: [[LOAD:%.*]] = load i32, ptr getelementptr inbounds ([[[#]] x i32], ptr @__cpu_features2, i32 0, i32 2)
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// CHECK-NEXT: and i32 [[LOAD]], 2
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int v3() { return __builtin_cpu_supports("x86-64-v3"); }
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// CHECK-LABEL: define{{.*}} @v4(
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// CHECK: [[LOAD:%.*]] = load i32, ptr getelementptr inbounds ([[[#]] x i32], ptr @__cpu_features2, i32 0, i32 2)
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// CHECK-NEXT: and i32 [[LOAD]], 4
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int v4() { return __builtin_cpu_supports("x86-64-v4"); }
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