| 1 | // Check that when we link a bitcode module into a file using |
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| 2 | // -mlink-builtin-bitcode, we apply the same attributes to the functions in that |
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| 3 | // bitcode module as we apply to functions we generate. |
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| 4 | // |
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| 5 | // In particular, we check that ftz and unsafe-math are propagated into the |
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| 6 | // bitcode library as appropriate. |
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| 7 | // |
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| 8 | // In addition, we set -ftrapping-math on the bitcode library, but then set |
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| 9 | // -fno-trapping-math on the main compilations, and ensure that the latter flag |
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| 10 | // overrides the flag on the bitcode library. |
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| 11 | |
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| 12 | // Build the bitcode library. This is not built in CUDA mode, otherwise it |
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| 13 | // might have incompatible attributes. This mirrors how libdevice is built. |
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| 14 | // RUN: %clang_cc1 -x c++ -emit-llvm-bc -ftrapping-math -DLIB \ |
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| 15 | // RUN: %s -o %t.bc -triple nvptx-unknown-unknown |
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| 16 | |
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| 17 | // RUN: %clang_cc1 -x cuda %s -emit-llvm -mlink-builtin-bitcode %t.bc -o - \ |
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| 18 | // RUN: -fno-trapping-math -fcuda-is-device -triple nvptx-unknown-unknown \ |
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| 19 | // RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=NOFTZ --check-prefix=NOFAST |
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| 20 | |
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| 21 | // RUN: %clang_cc1 -x cuda %s -emit-llvm -mlink-builtin-bitcode %t.bc \ |
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| 22 | // RUN: -fno-trapping-math -fcuda-flush-denormals-to-zero -o - \ |
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| 23 | // RUN: -fcuda-is-device -triple nvptx-unknown-unknown \ |
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| 24 | // RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=FTZ \ |
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| 25 | // RUN: --check-prefix=NOFAST |
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| 26 | |
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| 27 | // RUN: %clang_cc1 -x cuda %s -emit-llvm -mlink-builtin-bitcode %t.bc \ |
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| 28 | // RUN: -fno-trapping-math -fcuda-flush-denormals-to-zero -o - \ |
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| 29 | // RUN: -fcuda-is-device -menable-unsafe-fp-math -triple nvptx-unknown-unknown \ |
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| 30 | // RUN: | FileCheck %s --check-prefix=CHECK --check-prefix=FAST |
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| 31 | |
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| 32 | // Wrap everything in extern "C" so we don't have to worry about name mangling |
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| 33 | // in the IR. |
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| 34 | extern "C" { |
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| 35 | #ifdef LIB |
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| 36 | |
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| 37 | // This function is defined in the library and only declared in the main |
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| 38 | // compilation. |
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| 39 | void lib_fn() {} |
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| 40 | |
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| 41 | #else |
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| 42 | |
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| 43 | #include "Inputs/cuda.h" |
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| 44 | __device__ void lib_fn(); |
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| 45 | __global__ void kernel() { lib_fn(); } |
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| 46 | |
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| 47 | #endif |
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| 48 | } |
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| 49 | |
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| 50 | // The kernel and lib function should have the same attributes. |
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| 51 | // CHECK: define void @kernel() [[attr:#[0-9]+]] |
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| 52 | // CHECK: define internal void @lib_fn() [[attr]] |
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| 53 | |
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| 54 | // Check the attribute list. |
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| 55 | // CHECK: attributes [[attr]] = { |
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| 56 | // CHECK: "no-trapping-math"="true" |
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| 57 | |
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| 58 | // FTZ-SAME: "nvptx-f32ftz"="true" |
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| 59 | // NOFTZ-NOT: "nvptx-f32ftz"="true" |
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| 60 | |
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| 61 | // FAST-SAME: "unsafe-fp-math"="true" |
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| 62 | // NOFAST-NOT: "unsafe-fp-math"="true" |
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| 63 | |
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