fc0144a30c
Close https://github.com/llvm/llvm-project/issues/91418 Since we load the variable's initializers lazily, it'd be problematic if the initializers dependent on each other. So here we try to load the initializers of static variables to make sure they are passed to code generator by order. If we read any thing interesting, we would consume that before emitting the current declaration.
66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++20 -x c++-header %t/foo.h \
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// RUN: -emit-pch -o %t/foo.pch
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// RUN: %clang_cc1 -triple %itanium_abi_triple -std=c++20 %t/use.cpp -include-pch \
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// RUN: %t/foo.pch -emit-llvm -o - | FileCheck %t/use.cpp
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//--- foo.h
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#ifndef FOO_H
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#define FOO_H
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typedef float __m128 __attribute__((__vector_size__(16), __aligned__(16)));
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static __inline__ __m128 __attribute__((__always_inline__, __min_vector_width__(128)))
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_mm_setr_ps(float __z, float __y, float __x, float __w)
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{
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return __extension__ (__m128){ __z, __y, __x, __w };
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}
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typedef __m128 VR;
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inline VR MakeVR( float X, float Y, float Z, float W )
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{
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return _mm_setr_ps( X, Y, Z, W );
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}
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extern "C" float sqrtf(float);
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namespace VectorSinConstantsSSE
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{
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float a = (16 * sqrtf(0.225f));
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VR A = MakeVR(a, a, a, a);
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static const float b = (16 * sqrtf(0.225f));
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static const VR B = MakeVR(b, b, b, b);
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}
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#endif // FOO_H
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//--- use.cpp
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#include "foo.h"
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float use() {
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return VectorSinConstantsSSE::A[0] + VectorSinConstantsSSE::A[1] +
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VectorSinConstantsSSE::A[2] + VectorSinConstantsSSE::A[3] +
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VectorSinConstantsSSE::B[0] + VectorSinConstantsSSE::B[1] +
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VectorSinConstantsSSE::B[2] + VectorSinConstantsSSE::B[3];
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}
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// CHECK: define{{.*}}@__cxx_global_var_init(
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// CHECK: store{{.*}}, ptr @_ZN21VectorSinConstantsSSE1aE
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// CHECK: define{{.*}}@__cxx_global_var_init.1(
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// CHECK: store{{.*}}, ptr @_ZN21VectorSinConstantsSSE1AE
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// CHECK: define{{.*}}@__cxx_global_var_init.2(
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// CHECK: store{{.*}}, ptr @_ZN21VectorSinConstantsSSEL1BE
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// CHECK: define{{.*}}@__cxx_global_var_init.3(
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// CHECK: store{{.*}}, ptr @_ZN21VectorSinConstantsSSEL1bE
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// CHECK: @_GLOBAL__sub_I_use.cpp
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// CHECK: call{{.*}}@__cxx_global_var_init(
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// CHECK: call{{.*}}@__cxx_global_var_init.1(
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// CHECK: call{{.*}}@__cxx_global_var_init.3(
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// CHECK: call{{.*}}@__cxx_global_var_init.2(
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