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llvm-6502/test/CodeGen/X86/2009-10-25-RewriterBug.ll

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- Revert some changes from 85044, 85045, and 85047 that broke x86_64 tests and bootstrapping. It's not safe to leave identity subreg_to_reg and insert_subreg around. - Relax register scavenging to allow use of partially "not-live" registers. It's common for targets to operate on registers where the top bits are undef. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... = d0 When the insert_subreg is eliminated by the coalescer, the scavenger used to complain. The previous fix was to keep to insert_subreg around. But that's brittle and it's overly conservative when we want to use the scavenger to allocate registers. It's actually legal and desirable for other instructions to use the "undef" part of d0. e.g. s0 = d0 = insert_subreg d0<undef>, s0, 1 ... s1 = = s1 = d0 We probably need add a "partial-undef" marker on machine operand so the machine verifier would not complain. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@85091 91177308-0d34-0410-b5e6-96231b3b80d8
2009-10-26 04:56:07 +00:00
; RUN: llc < %s -mtriple=x86_64-apple-darwin -relocation-model=pic -disable-fp-elim
%struct.DecRefPicMarking_t = type { i32, i32, i32, i32, i32, %struct.DecRefPicMarking_t* }
%struct.FrameStore = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, %struct.StorablePicture*, %struct.StorablePicture*, %struct.StorablePicture* }
%struct.StorablePicture = type { i32, i32, i32, i32, i32, [50 x [6 x [33 x i64]]], [50 x [6 x [33 x i64]]], [50 x [6 x [33 x i64]]], [50 x [6 x [33 x i64]]], i32, i32, i32, i32, i32, i32, i32, i32, i32, i16, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i16**, i16***, i8*, i16**, i8***, i64***, i64***, i16****, i8**, i8**, %struct.StorablePicture*, %struct.StorablePicture*, %struct.StorablePicture*, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, [2 x i32], i32, %struct.DecRefPicMarking_t*, i32 }
define fastcc void @insert_picture_in_dpb(%struct.FrameStore* nocapture %fs, %struct.StorablePicture* %p) nounwind ssp {
entry:
%0 = getelementptr inbounds %struct.FrameStore* %fs, i64 0, i32 12 ; <%struct.StorablePicture**> [#uses=1]
%1 = icmp eq i32 undef, 0 ; <i1> [#uses=1]
br i1 %1, label %bb.i, label %bb36.i
bb.i: ; preds = %entry
br i1 undef, label %bb3.i, label %bb14.preheader.i
bb3.i: ; preds = %bb.i
unreachable
bb14.preheader.i: ; preds = %bb.i
br i1 undef, label %bb9.i, label %bb20.preheader.i
bb9.i: ; preds = %bb9.i, %bb14.preheader.i
br i1 undef, label %bb9.i, label %bb20.preheader.i
bb20.preheader.i: ; preds = %bb9.i, %bb14.preheader.i
br i1 undef, label %bb18.i, label %bb29.preheader.i
bb18.i: ; preds = %bb20.preheader.i
unreachable
bb29.preheader.i: ; preds = %bb20.preheader.i
br i1 undef, label %bb24.i, label %bb30.i
bb24.i: ; preds = %bb29.preheader.i
unreachable
bb30.i: ; preds = %bb29.preheader.i
store i32 undef, i32* undef, align 8
br label %bb67.preheader.i
bb36.i: ; preds = %entry
br label %bb67.preheader.i
bb67.preheader.i: ; preds = %bb36.i, %bb30.i
%2 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=2]
%3 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=2]
%4 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=2]
%5 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%6 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%7 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%8 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%9 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%10 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%11 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
%12 = phi %struct.StorablePicture* [ null, %bb36.i ], [ undef, %bb30.i ] ; <%struct.StorablePicture*> [#uses=1]
br i1 undef, label %bb38.i, label %bb68.i
bb38.i: ; preds = %bb66.i, %bb67.preheader.i
%13 = phi %struct.StorablePicture* [ %37, %bb66.i ], [ %2, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%14 = phi %struct.StorablePicture* [ %38, %bb66.i ], [ %3, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%15 = phi %struct.StorablePicture* [ %39, %bb66.i ], [ %4, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%16 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %5, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%17 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %6, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%18 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %7, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%19 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %8, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%20 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %9, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%21 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %10, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%22 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %11, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%23 = phi %struct.StorablePicture* [ %40, %bb66.i ], [ %12, %bb67.preheader.i ] ; <%struct.StorablePicture*> [#uses=1]
%indvar248.i = phi i64 [ %indvar.next249.i, %bb66.i ], [ 0, %bb67.preheader.i ] ; <i64> [#uses=3]
%storemerge52.i = trunc i64 %indvar248.i to i32 ; <i32> [#uses=1]
%24 = getelementptr inbounds %struct.StorablePicture* %23, i64 0, i32 19 ; <i32*> [#uses=0]
br i1 undef, label %bb.nph51.i, label %bb66.i
bb.nph51.i: ; preds = %bb38.i
%25 = sdiv i32 %storemerge52.i, 8 ; <i32> [#uses=0]
br label %bb39.i
bb39.i: ; preds = %bb64.i, %bb.nph51.i
%26 = phi %struct.StorablePicture* [ %17, %bb.nph51.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=1]
%27 = phi %struct.StorablePicture* [ %18, %bb.nph51.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=0]
%28 = phi %struct.StorablePicture* [ %19, %bb.nph51.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=0]
%29 = phi %struct.StorablePicture* [ %20, %bb.nph51.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=0]
%30 = phi %struct.StorablePicture* [ %21, %bb.nph51.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=0]
%31 = phi %struct.StorablePicture* [ %22, %bb.nph51.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=0]
br i1 undef, label %bb57.i, label %bb40.i
bb40.i: ; preds = %bb39.i
br i1 undef, label %bb57.i, label %bb41.i
bb41.i: ; preds = %bb40.i
%storemerge10.i = select i1 undef, i32 2, i32 4 ; <i32> [#uses=1]
%32 = zext i32 %storemerge10.i to i64 ; <i64> [#uses=1]
br i1 undef, label %bb45.i, label %bb47.i
bb45.i: ; preds = %bb41.i
%33 = getelementptr inbounds %struct.StorablePicture* %26, i64 0, i32 5, i64 undef, i64 %32, i64 undef ; <i64*> [#uses=1]
%34 = load i64* %33, align 8 ; <i64> [#uses=1]
br label %bb47.i
bb47.i: ; preds = %bb45.i, %bb41.i
%storemerge11.i = phi i64 [ %34, %bb45.i ], [ 0, %bb41.i ] ; <i64> [#uses=0]
%scevgep246.i = getelementptr i64* undef, i64 undef ; <i64*> [#uses=0]
br label %bb64.i
bb57.i: ; preds = %bb40.i, %bb39.i
br i1 undef, label %bb58.i, label %bb60.i
bb58.i: ; preds = %bb57.i
br label %bb60.i
bb60.i: ; preds = %bb58.i, %bb57.i
%35 = load i64*** undef, align 8 ; <i64**> [#uses=1]
%scevgep256.i = getelementptr i64** %35, i64 %indvar248.i ; <i64**> [#uses=1]
%36 = load i64** %scevgep256.i, align 8 ; <i64*> [#uses=1]
%scevgep243.i = getelementptr i64* %36, i64 undef ; <i64*> [#uses=1]
store i64 -1, i64* %scevgep243.i, align 8
br label %bb64.i
bb64.i: ; preds = %bb60.i, %bb47.i
br i1 undef, label %bb39.i, label %bb66.i
bb66.i: ; preds = %bb64.i, %bb38.i
%37 = phi %struct.StorablePicture* [ %13, %bb38.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=2]
%38 = phi %struct.StorablePicture* [ %14, %bb38.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=2]
%39 = phi %struct.StorablePicture* [ %15, %bb38.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=2]
%40 = phi %struct.StorablePicture* [ %16, %bb38.i ], [ null, %bb64.i ] ; <%struct.StorablePicture*> [#uses=8]
%indvar.next249.i = add i64 %indvar248.i, 1 ; <i64> [#uses=1]
br i1 undef, label %bb38.i, label %bb68.i
bb68.i: ; preds = %bb66.i, %bb67.preheader.i
%41 = phi %struct.StorablePicture* [ %2, %bb67.preheader.i ], [ %37, %bb66.i ] ; <%struct.StorablePicture*> [#uses=0]
%42 = phi %struct.StorablePicture* [ %3, %bb67.preheader.i ], [ %38, %bb66.i ] ; <%struct.StorablePicture*> [#uses=1]
%43 = phi %struct.StorablePicture* [ %4, %bb67.preheader.i ], [ %39, %bb66.i ] ; <%struct.StorablePicture*> [#uses=1]
br i1 undef, label %bb.nph48.i, label %bb108.i
bb.nph48.i: ; preds = %bb68.i
br label %bb80.i
bb80.i: ; preds = %bb104.i, %bb.nph48.i
%44 = phi %struct.StorablePicture* [ %42, %bb.nph48.i ], [ null, %bb104.i ] ; <%struct.StorablePicture*> [#uses=1]
%45 = phi %struct.StorablePicture* [ %43, %bb.nph48.i ], [ null, %bb104.i ] ; <%struct.StorablePicture*> [#uses=1]
br i1 undef, label %bb.nph39.i, label %bb104.i
bb.nph39.i: ; preds = %bb80.i
br label %bb81.i
bb81.i: ; preds = %bb102.i, %bb.nph39.i
%46 = phi %struct.StorablePicture* [ %44, %bb.nph39.i ], [ %48, %bb102.i ] ; <%struct.StorablePicture*> [#uses=0]
%47 = phi %struct.StorablePicture* [ %45, %bb.nph39.i ], [ %48, %bb102.i ] ; <%struct.StorablePicture*> [#uses=0]
br i1 undef, label %bb83.i, label %bb82.i
bb82.i: ; preds = %bb81.i
br i1 undef, label %bb83.i, label %bb101.i
bb83.i: ; preds = %bb82.i, %bb81.i
br label %bb102.i
bb101.i: ; preds = %bb82.i
br label %bb102.i
bb102.i: ; preds = %bb101.i, %bb83.i
%48 = load %struct.StorablePicture** %0, align 8 ; <%struct.StorablePicture*> [#uses=2]
br i1 undef, label %bb81.i, label %bb104.i
bb104.i: ; preds = %bb102.i, %bb80.i
br label %bb80.i
bb108.i: ; preds = %bb68.i
unreachable
}
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