730773602f
This also demonstrates a bug that's a consequence of the two different paths for the single and multithreaded cases. The parallel path goes through bitcode serialization and does preserve the uselistorder. It therefore survives and we can observe a reduced uselistorder with deleted instructions. In the CloneModule case, nothing is reduced.
49 lines
1.9 KiB
LLVM
49 lines
1.9 KiB
LLVM
; RUN: opt --preserve-bc-uselistorder --thinlto-bc --thinlto-split-lto-unit %s -o %t.0
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; RUN: llvm-reduce -j=2 --delta-passes=instructions %t.0 -o %t.1 \
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; RUN: --test %python --test-arg %p/Inputs/llvm-dis-and-filecheck.py --test-arg llvm-dis --test-arg FileCheck --test-arg --check-prefix=INTERESTING --test-arg %s
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; RUN: llvm-dis --preserve-ll-uselistorder %t.1 -o %t.2
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; RUN: FileCheck --check-prefixes=RESULT,RESULT-PARALLEL %s < %t.2
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; FIXME: The single thread path uses CloneModule, which does not
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; preserve uselistorder. Consequently it is incapable of reducing
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; anything a case that depends on uselistorder.
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; RUN: llvm-reduce -j=1 --delta-passes=instructions %t.0 -o %t.3 \
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; RUN: --test %python --test-arg %p/Inputs/llvm-dis-and-filecheck.py --test-arg llvm-dis --test-arg FileCheck --test-arg --check-prefix=INTERESTING --test-arg %s
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; RUN: llvm-dis --preserve-ll-uselistorder %t.3 -o %t.4
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; RUN: FileCheck --check-prefixes=RESULT,RESULT-SINGLE %s < %t.4
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@gv0 = external global [0 x i8]
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; RESULT-LABEL: @func(
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; RESULT-PARALLEL-NEXT: %gep0 = getelementptr i8, ptr @gv0, i32 %arg0
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; RESULT-PARALLEL-NEXT: %gep1 = getelementptr i8, ptr @gv0, i32 %arg1
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; RESULT-PARALLEL-NEXT: ret void
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; RESULT-SINGLE: ptr @gv0
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; RESULT-SINGLE: ptr @gv0
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; RESULT-SINGLE: ptr @gv0
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; RESULT-SINGLE: ptr @gv0
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; RESULT-SINGLE: ptr @gv0
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define void @func(i32 %arg0, i32 %arg1, i32 %arg2, i32 %arg3) {
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%gep0 = getelementptr i8, ptr @gv0, i32 %arg0
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%gep1 = getelementptr i8, ptr @gv0, i32 %arg1
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%gep2 = getelementptr i8, ptr @gv0, i32 %arg2
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%gep3 = getelementptr i8, ptr @gv0, i32 %arg3
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store i32 0, ptr %gep0
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store i32 0, ptr %gep1
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store i32 0, ptr %gep2
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store i32 0, ptr %gep3
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store i32 0, ptr @gv0
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ret void
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}
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; INTERESTING: uselistorder ptr
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; RESULT: uselistorder directives
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; RESULT-PARALLEL: uselistorder ptr @gv0, { 1, 0 }
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; RESULT-SINGLE: uselistorder ptr @gv0, { 3, 4, 2, 1, 0 }
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uselistorder ptr @gv0, { 3, 4, 2, 1, 0 }
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