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This test was added in D72538, along with multiple LLVM pipeline tests, to ensure that distributed ThinLTO backends invoked via clang set up the expected ThinLTO optimization pipeline. However, this introduces churn to clang tests from LLVM pipeline changes (see recent comment in that patch). Since the full pipeline setup is tested by LLVM, I have changed this test to simply look for a single pass that is only invoked during LTO backends, to make sure that clang is provoking the an LTO backend pipeline setup.
38 lines
1.3 KiB
LLVM
38 lines
1.3 KiB
LLVM
; FIXME: This test should use CHECK-NEXT to keep up-to-date.
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; REQUIRES: x86-registered-target
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;; Validate that we set up the ThinLTO post link pipeline at O2 and O3
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;; for a ThinLTO distributed backend invoked via clang.
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;; Since LLVM tests already more thoroughly test this pipeline, and to
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;; avoid making this clang test too sensitive to LLVM pipeline changes,
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;; here we simply confirm that an LTO backend-specific pass is getting
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;; invoked (WPD).
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; RUN: opt -thinlto-bc -o %t.o %s
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; RUN: llvm-lto2 run -thinlto-distributed-indexes %t.o \
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; RUN: -o %t2.index \
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; RUN: -r=%t.o,main,px
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; RUN: %clang -target x86_64-grtev4-linux-gnu \
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; RUN: -O2 -Xclang -fdebug-pass-manager \
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; RUN: -c -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -o %t.native.o -x ir %t.o 2>&1 | FileCheck -check-prefix=CHECK-O %s --dump-input=fail
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; RUN: %clang -target x86_64-grtev4-linux-gnu \
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; RUN: -O3 -Xclang -fdebug-pass-manager \
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; RUN: -c -fthinlto-index=%t.o.thinlto.bc \
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; RUN: -o %t.native.o -x ir %t.o 2>&1 | FileCheck -check-prefixes=CHECK-O %s --dump-input=fail
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; CHECK-O: Running pass: WholeProgramDevirtPass
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-grtev4-linux-gnu"
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define i32 @main() {
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br label %b
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b:
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br label %b
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ret i32 0
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}
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