fd739804e0
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 `{{.*}} `.
25 lines
1.1 KiB
C++
25 lines
1.1 KiB
C++
// Test offload registration for two targets, and test offload target validation.
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// RUN: %clang_cc1 -verify -fopenmp -x c -triple x86_64-unknown-linux-gnu -fopenmp-targets=x86_64-pc-linux-gnu,powerpc64le-ibm-linux-gnu -emit-llvm %s -o - | FileCheck %s
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// RUN: %clang_cc1 -verify -fopenmp -x c -triple x86_64-unknown-linux-gnu -fopenmp-targets=aarch64-unknown-linux-gnu -emit-llvm %s -o - | FileCheck %s
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// expected-no-diagnostics
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void foo() {
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#pragma omp target
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{}
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}
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// CHECK-DAG: [[ENTTY:%.+]] = type { i8*, i8*, i[[SZ:32|64]], i32, i32 }
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// Check target registration is registered as a Ctor.
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// CHECK: appending global [1 x { i32, void ()*, i8* }] [{ i32, void ()*, i8* } { i32 0, void ()* @.omp_offloading.requires_reg, i8* null }]
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// Check presence of foo() and the outlined target region
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// CHECK: define{{.*}} void [[FOO:@.+]]()
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// CHECK: define internal void [[OUTLINEDTARGET:@.+]]()
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// Check registration and unregistration code.
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// CHECK: define internal void @.omp_offloading.requires_reg()
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// CHECK: call void @__tgt_register_requires(i64 1)
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// CHECK: ret void
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