forked from OSchip/llvm-project
83 lines
3.1 KiB
C
83 lines
3.1 KiB
C
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// RUN: %clang_cc1 -triple aarch64-linux-gnu -target-feature +neon -fopenmp -x c -emit-llvm %s -o - -femit-all-decls | FileCheck %s
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// RUN: %clang_cc1 -triple aarch64-linux-gnu -target-feature +neon -fopenmp-simd -x c -emit-llvm %s -o - -femit-all-decls | FileCheck %s
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// REQUIRES: aarch64-registered-target
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// Note: -fopemp and -fopenmp-simd behavior are expected to be the same.
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// This test checks the values of Narrowest Data Size (NDS), as defined in
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// https://github.com/ARM-software/abi-aa/tree/master/vfabia64
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//
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// NDS is used to compute the <vlen> token in the name of AdvSIMD
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// vector functions when no `simdlen` is specified, with the rule:
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//
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// if NDS(f) = 1, then VLEN = 16, 8;
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// if NDS(f) = 2, then VLEN = 8, 4;
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// if NDS(f) = 4, then VLEN = 4, 2;
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// if NDS(f) = 8 or NDS(f) = 16, then VLEN = 2.
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// NDS(NDS_is_sizeof_char) = 1
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#pragma omp declare simd notinbranch
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char NDS_is_sizeof_char(short in);
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// CHECK-DAG: _ZGVnN16v_NDS_is_sizeof_char
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// CHECK-DAG: _ZGVnN8v_NDS_is_sizeof_char
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// CHECK-NOT: _ZGV{{.*}}_NDS_is_sizeof_char
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// NDS(NDS_is_sizeof_short) = 2
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#pragma omp declare simd notinbranch
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int NDS_is_sizeof_short(short in);
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// CHECK-DAG: _ZGVnN8v_NDS_is_sizeof_short
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// CHECK-DAG: _ZGVnN4v_NDS_is_sizeof_short
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// CHECK-NOT: _ZGV{{.*}}_NDS_is_sizeof_short
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// NDS(NDS_is_sizeof_float_with_linear) = 4, and not 2, because the pointers are
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// marked as `linear` and therefore the size of the pointee realizes
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// the NDS.
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#pragma omp declare simd linear(sin) notinbranch
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void NDS_is_sizeof_float_with_linear(double in, float *sin);
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// Neon accepts only power of 2 values as <vlen>.
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// CHECK-DAG: _ZGVnN4vl4_NDS_is_sizeof_float_with_linear
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// CHECK-DAG: _ZGVnN2vl4_NDS_is_sizeof_float_with_linear
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// CHECK-NOT: _ZGV{{.*}}_NDS_is_sizeof_float_with_linear
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// NDS(NDS_is_size_of_float) = 4
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#pragma omp declare simd notinbranch
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double NDS_is_size_of_float(float in);
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// CHECK-DAG: _ZGVnN4v_NDS_is_size_of_float
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// CHECK-DAG: _ZGVnN2v_NDS_is_size_of_float
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// CHECK-NOT: _ZGV{{.*}}_NDS_is_size_of_float
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// NDS(NDS_is_sizeof_double) = 8
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#pragma omp declare simd linear(sin) notinbranch
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void NDS_is_sizeof_double(double in, double *sin);
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// CHECK-DAG: _ZGVnN2vl8_NDS_is_sizeof_double
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// CHECK-NOT: _ZGV{{.*}}_NDS_is_sizeof_double
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// NDS(double_complex) = 16
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#pragma omp declare simd notinbranch
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double _Complex double_complex(double _Complex);
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// CHECK-DAG: _ZGVnN2v_double_complex
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// CHECK-NOT: _ZGV{{.*}}_double_complex
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// NDS(double_complex_linear_char) = 1, becasue `x` is marked linear.
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#pragma omp declare simd linear(x) notinbranch
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double _Complex double_complex_linear_char(double _Complex y, char *x);
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// CHECK-DAG: _ZGVnN8vl_double_complex_linear_char
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// CHECK-DAG: _ZGVnN16vl_double_complex_linear_char
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// CHECK-NOT: _ZGV{{.*}}_double_complex_linear_char
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static float *F;
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static double *D;
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static short S;
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static int I;
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static char C;
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static double _Complex DC;
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void do_something() {
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C = NDS_is_sizeof_char(S);
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I = NDS_is_sizeof_short(S);
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NDS_is_sizeof_float_with_linear(*D, F);
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*D = NDS_is_size_of_float(*F);
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NDS_is_sizeof_double(*D, D);
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DC = double_complex(DC);
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DC = double_complex_linear_char(DC, &C);
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}
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