5004c59803
This patch introduces support for Integrated Distributed ThinLTO (DTLTO) in Clang. DTLTO enables the distribution of ThinLTO backend compilations via external distribution systems, such as Incredibuild, during the traditional link step: https://llvm.org/docs/DTLTO.html. Testing: - `lit` test coverage has been added to Clang's Driver tests. - The DTLTO cross-project tests will use this Clang support. For the design discussion of the DTLTO feature, see: https://github.com/llvm/llvm-project/pull/126654
37 lines
1.2 KiB
C
37 lines
1.2 KiB
C
// REQUIRES: ld.lld
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/// Simple test that DTLTO works with a single input bitcode file and that
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/// --save-temps can be applied to the remote compilation.
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// RUN: rm -rf %t && mkdir %t && cd %t
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// RUN: %clang --target=x86_64-linux-gnu %s -flto=thin -fuse-ld=lld \
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// RUN: -fthinlto-distributor=%python \
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// RUN: -Xthinlto-distributor=%llvm_src_root/utils/dtlto/local.py \
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// RUN: -Wl,--thinlto-remote-compiler-arg=--save-temps \
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// RUN: -nostdlib -Werror
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/// Check that the required output files have been created.
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// RUN: ls | sort | FileCheck %s
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/// No files are expected before.
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// CHECK-NOT: {{.}}
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/// Linked ELF.
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// CHECK: {{^}}a.out{{$}}
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/// --save-temps output for the backend compilation.
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP:[a-zA-Z0-9_]+]].s{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.0.preopt.bc{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.1.promote.bc{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.2.internalize.bc{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.3.import.bc{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.4.opt.bc{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.5.precodegen.bc{{$}}
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// CHECK-NEXT: {{^}}ld-dtlto-[[TMP]].s.resolution.txt{{$}}
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/// No files are expected after.
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// CHECK-NOT: {{.}}
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int _start() { return 0; }
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