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 `{{.*}} `.
23 lines
962 B
Plaintext
23 lines
962 B
Plaintext
// REQUIRES: x86-registered-target
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// REQUIRES: nvptx-registered-target
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// RUN: %clang_cc1 -triple x86_64-unknown-linux-gnu -emit-llvm -o - %s | \
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// RUN: FileCheck --check-prefixes=HOST,BOTH %s
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// RUN: %clang_cc1 -fcuda-is-device -triple nvptx64-nvidia-cuda \
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// RUN: -emit-llvm -o - %s | FileCheck %s --check-prefixes=DEVICE,BOTH
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// BOTH-LABEL: define{{.*}} float @logf(float
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// logf() should be calling itself recursively as we don't have any standard
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// library on device side.
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// DEVICE: call contract float @logf(float
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extern "C" __attribute__((device)) float logf(float __x) { return logf(__x); }
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// NOTE: this case is to illustrate the expected differences in behavior between
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// the host and device. In general we do not mess with host-side standard
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// library.
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//
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// Host is assumed to have standard library, so logf() calls LLVM intrinsic.
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// HOST: call contract float @llvm.log.f32(float
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extern "C" float logf(float __x) { return logf(__x); }
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