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llvm-project/clang/test/CodeGen/builtin-complex.c

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For PR46800, implement the GCC __builtin_complex builtin. glibc's implementation of the CMPLX macro uses it (with -fgnuc-version set to 4.7 or later).
2020-07-23 04:34:07 +08:00
// RUN: %clang_cc1 -triple x86_64-linux -w -S -o - -emit-llvm -DT=float %s | FileCheck %s --check-prefixes=CHECK,CHECK-FLOAT
// RUN: %clang_cc1 -triple x86_64-linux -w -S -o - -emit-llvm -DT=double %s | FileCheck %s --check-prefixes=CHECK,CHECK-DOUBLE
// RUN: %clang_cc1 -triple x86_64-linux -w -S -o - -emit-llvm -DT="long double" %s | FileCheck %s --check-prefixes=CHECK,CHECK-FP80
// RUN: %clang_cc1 -triple x86_64-linux -w -S -o - -emit-llvm -DT=__float128 %s | FileCheck %s --check-prefixes=CHECK,CHECK-FP128
// FIXME: If we start to support _Complex __fp16 or _Complex _Float16, add tests for them too.
[test] Add {{.*}} to make ELF tests immune to dso_local/dso_preemptable/(none) differences For a default visibility external linkage definition, dso_local is set for ELF -fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences. To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition, which sets dso_local for default visibility external linkage definitions. To make this flip smooth and enable future (dso_local as definition default), this patch replaces (function) `define ` with `define{{.*}} `, (variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
2020-12-31 16:27:11 +08:00
// CHECK-FLOAT: @global ={{.*}} global { [[T:float]], [[T]] } { [[T]] 1.0{{.*}}, [[T]] 2.0{{.*}} }
// CHECK-DOUBLE: @global ={{.*}} global { [[T:double]], [[T]] } { [[T]] 1.0{{.*}}, [[T]] 2.0{{.*}} }
// CHECK-FP80: @global ={{.*}} global { [[T:x86_fp80]], [[T]] } { [[T]] 0xK3FFF8000000000000000, [[T]] 0xK40008000000000000000 }
// CHECK-FP128: @global ={{.*}} global { [[T:fp128]], [[T]] } { [[T]] 0xL00000000000000003FFF000000000000, [[T]] 0xL00000000000000004000000000000000 }
For PR46800, implement the GCC __builtin_complex builtin. glibc's implementation of the CMPLX macro uses it (with -fgnuc-version set to 4.7 or later).
2020-07-23 04:34:07 +08:00
_Complex T global = __builtin_complex(1.0, 2.0);
// CHECK-LABEL: @test
_Complex T test(T a, T b) {
return __builtin_complex(a, b);
// CHECK: %[[A:.*]] = load [[T]], [[T]]* %a.addr,
// CHECK: %[[B:.*]] = load [[T]], [[T]]* %b.addr,
// CHECK: %[[RET_RE:.*]] = getelementptr inbounds { [[T]], [[T]] }, { [[T]], [[T]] }* %[[RET:[^,]*]], i32 0, i32 0
// CHECK: %[[RET_IM:.*]] = getelementptr inbounds { [[T]], [[T]] }, { [[T]], [[T]] }* %[[RET]], i32 0, i32 1
// CHECK: store [[T]] %[[A]], [[T]]* %[[RET_RE]],
// CHECK: store [[T]] %[[B]], [[T]]* %[[RET_IM]],
}