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https://github.com/c64scene-ar/llvm-6502.git
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A couple of places where reused use operands should be marked kill. This is exposed by recent availability fallthrough changes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@64745 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1599,6 +1599,12 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM,
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PotentialDeadStoreSlots.push_back(ReuseSlot);
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}
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// Assumes this is the last use. IsKill will be unset if reg is reused
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// unless it's a two-address operand.
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if (ti == -1)
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MI.getOperand(i).setIsKill();
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continue;
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} // CanReuse
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@ -1764,6 +1770,11 @@ void LocalSpiller::RewriteMBB(MachineBasicBlock &MBB, VirtRegMap &VRM,
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DefMO = NextMII->findRegisterDefOperand(DestReg);
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DefMO->setSubReg(SubIdx);
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}
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// Mark is killed.
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MachineOperand *KillOpnd = NextMII->findRegisterUseOperand(InReg);
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KillOpnd->setIsKill();
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BackTracked = true;
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} else {
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DOUT << "Removing now-noop copy: " << MI;
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@ -1,5 +1,5 @@
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; RUN: llvm-as < %s | llc -mtriple=arm-apple-darwin9
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; RUN: llvm-as < %s | llc -mtriple=arm-apple-darwin9 -stats |& grep asm-printer | grep 186
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; RUN: llvm-as < %s | llc -mtriple=arm-apple-darwin9 -stats |& grep asm-printer | grep 185
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%"struct.Adv5::Ekin<3>" = type <{ i8 }>
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%"struct.Adv5::X::Energyflux<3>" = type { double }
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117
test/CodeGen/ARM/2009-02-16-SpillerBug.ll
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117
test/CodeGen/ARM/2009-02-16-SpillerBug.ll
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@ -0,0 +1,117 @@
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; RUN: llvm-as < %s | llc -march=arm -mattr=+v6,+vfp2
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target triple = "arm-apple-darwin9"
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%struct.FILE_POS = type { i8, i8, i16, i32 }
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%struct.FIRST_UNION = type { %struct.FILE_POS }
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%struct.FOURTH_UNION = type { %struct.STYLE }
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%struct.GAP = type { i8, i8, i16 }
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%struct.LIST = type { %struct.rec*, %struct.rec* }
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%struct.SECOND_UNION = type { { i16, i8, i8 } }
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%struct.STYLE = type { { %struct.GAP }, { %struct.GAP }, i16, i16, i32 }
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%struct.THIRD_UNION = type { { [2 x i32], [2 x i32] } }
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%struct.head_type = type { [2 x %struct.LIST], %struct.FIRST_UNION, %struct.SECOND_UNION, %struct.THIRD_UNION, %struct.FOURTH_UNION, %struct.rec*, { %struct.rec* }, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, %struct.rec*, i32 }
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%struct.rec = type { %struct.head_type }
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@no_file_pos = external global %struct.FILE_POS ; <%struct.FILE_POS*> [#uses=1]
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@"\01LC13423" = external constant [23 x i8] ; <[23 x i8]*> [#uses=1]
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@"\01LC18972" = external constant [13 x i8] ; <[13 x i8]*> [#uses=1]
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define fastcc void @FlushGalley(%struct.rec* %hd) nounwind {
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entry:
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br label %RESUME
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RESUME: ; preds = %bb520.preheader, %entry
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br label %bb396
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bb122: ; preds = %bb396
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switch i32 0, label %bb394 [
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i32 1, label %bb131
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i32 2, label %bb244
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i32 4, label %bb244
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i32 5, label %bb244
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i32 6, label %bb244
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i32 7, label %bb244
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i32 11, label %bb244
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i32 12, label %bb244
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i32 15, label %bb244
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i32 17, label %bb244
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i32 18, label %bb244
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i32 19, label %bb244
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i32 20, label %bb396
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i32 21, label %bb396
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i32 22, label %bb396
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i32 23, label %bb396
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i32 24, label %bb244
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i32 25, label %bb244
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i32 26, label %bb244
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i32 27, label %bb244
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i32 28, label %bb244
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i32 29, label %bb244
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i32 30, label %bb244
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i32 31, label %bb244
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i32 32, label %bb244
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i32 33, label %bb244
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i32 34, label %bb244
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i32 35, label %bb244
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i32 36, label %bb244
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i32 37, label %bb244
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i32 38, label %bb244
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i32 39, label %bb244
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i32 40, label %bb244
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i32 41, label %bb244
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i32 42, label %bb244
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i32 43, label %bb244
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i32 44, label %bb244
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i32 45, label %bb244
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i32 46, label %bb244
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i32 50, label %bb244
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i32 51, label %bb244
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i32 94, label %bb244
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i32 95, label %bb244
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i32 96, label %bb244
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i32 97, label %bb244
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i32 98, label %bb244
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i32 99, label %bb244
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]
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bb131: ; preds = %bb122
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br label %bb396
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bb244: ; preds = %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122, %bb122
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%0 = icmp eq %struct.rec* %stop_link.3, null ; <i1> [#uses=1]
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br i1 %0, label %bb435, label %bb433
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bb394: ; preds = %bb122
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call void (i32, i32, i8*, i32, %struct.FILE_POS*, ...)* @Error(i32 1, i32 3, i8* getelementptr ([23 x i8]* @"\01LC13423", i32 0, i32 0), i32 0, %struct.FILE_POS* @no_file_pos, i8* getelementptr ([13 x i8]* @"\01LC18972", i32 0, i32 0), i8* null) nounwind
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br label %bb396
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bb396: ; preds = %bb394, %bb131, %bb122, %bb122, %bb122, %bb122, %RESUME
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%stop_link.3 = phi %struct.rec* [ null, %RESUME ], [ %stop_link.3, %bb394 ], [ %stop_link.3, %bb122 ], [ %stop_link.3, %bb122 ], [ %stop_link.3, %bb122 ], [ %stop_link.3, %bb122 ], [ %link.1, %bb131 ] ; <%struct.rec*> [#uses=7]
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%headers_seen.1 = phi i32 [ 0, %RESUME ], [ %headers_seen.1, %bb394 ], [ 1, %bb122 ], [ 1, %bb122 ], [ 1, %bb122 ], [ 1, %bb122 ], [ %headers_seen.1, %bb131 ] ; <i32> [#uses=2]
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%link.1 = load %struct.rec** null ; <%struct.rec*> [#uses=2]
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%1 = icmp eq %struct.rec* %link.1, %hd ; <i1> [#uses=1]
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br i1 %1, label %bb398, label %bb122
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bb398: ; preds = %bb396
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unreachable
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bb433: ; preds = %bb244
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call fastcc void @Promote(%struct.rec* %hd, %struct.rec* %stop_link.3, %struct.rec* null, i32 1) nounwind
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br label %bb435
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bb435: ; preds = %bb433, %bb244
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br i1 false, label %bb491, label %bb499
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bb491: ; preds = %bb435
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br label %bb499
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bb499: ; preds = %bb499, %bb491, %bb435
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%2 = icmp eq %struct.rec* null, null ; <i1> [#uses=1]
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br i1 %2, label %bb520.preheader, label %bb499
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bb520.preheader: ; preds = %bb499
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br label %RESUME
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}
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declare fastcc void @Promote(%struct.rec*, %struct.rec*, %struct.rec* nocapture, i32) nounwind
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declare void @Error(i32, i32, i8*, i32, %struct.FILE_POS*, ...) nounwind
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