derek.holloway
7502bf64a4
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47 lines
1.4 KiB
LLVM
47 lines
1.4 KiB
LLVM
; RUN: opt -mtriple hexagon-- -S -passes='loop(hexagon-loop-idiom,loop-deletion),gvn'
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; REQUIRES: asserts
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; This tests that the HexagonLoopIdiom pass does not mark LCSSA information
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; as preserved. The pass calls SimplifyInstruction is a couple of places,
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; which can invalidate LCSSA. Specifically, the uses of a LCSSA phi variable
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; are replaced by the incoming value.
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define hidden void @test() local_unnamed_addr #0 {
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entry:
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br label %if.then63
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if.then63:
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br i1 undef, label %do.body311, label %if.end375
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do.body311:
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br i1 undef, label %do.end318, label %do.body311
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do.end318:
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br i1 undef, label %if.end322, label %if.end375
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if.end322:
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%sub325 = sub i32 undef, undef
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br i1 undef, label %do.end329, label %do.body311
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do.end329:
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%sub325.lcssa = phi i32 [ %sub325, %if.end322 ]
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br label %do.body330
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do.body330:
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%row_width.7 = phi i32 [ %sub325.lcssa, %do.end329 ], [ %dec334, %do.body330 ]
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%sp.5 = phi ptr [ undef, %do.end329 ], [ %incdec.ptr331, %do.body330 ]
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%dp.addr.5 = phi ptr [ undef, %do.end329 ], [ %incdec.ptr332, %do.body330 ]
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%0 = load i8, ptr %sp.5, align 1
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store i8 %0, ptr %dp.addr.5, align 1
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%incdec.ptr332 = getelementptr inbounds i8, ptr %dp.addr.5, i32 1
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%incdec.ptr331 = getelementptr inbounds i8, ptr %sp.5, i32 1
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%dec334 = add i32 %row_width.7, -1
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%cmp335 = icmp eq i32 %dec334, 0
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br i1 %cmp335, label %if.end375, label %do.body330
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if.end375:
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ret void
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}
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attributes #0 = { nounwind }
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