diff options
| -rw-r--r-- | lib/Analysis/PHITransAddr.cpp | 4 | ||||
| -rw-r--r-- | test/Transforms/GVN/crash-2.ll | 66 |
2 files changed, 4 insertions, 66 deletions
diff --git a/lib/Analysis/PHITransAddr.cpp b/lib/Analysis/PHITransAddr.cpp index a1b2afbaf7..07e291971a 100644 --- a/lib/Analysis/PHITransAddr.cpp +++ b/lib/Analysis/PHITransAddr.cpp @@ -275,6 +275,10 @@ Value *PHITransAddr::PHITranslateSubExpr(Value *V, BasicBlock *CurBB, RemoveInstInputs(LHS, InstInputs); return AddAsInput(Res); } + + // If we didn't modify the add, just return it. + if (LHS == Inst->getOperand(0) && RHS == Inst->getOperand(1)) + return Inst; // Otherwise, see if we have this add available somewhere. for (Value::use_iterator UI = LHS->use_begin(), E = LHS->use_end(); diff --git a/test/Transforms/GVN/crash-2.ll b/test/Transforms/GVN/crash-2.ll deleted file mode 100644 index ee1ab6d6c6..0000000000 --- a/test/Transforms/GVN/crash-2.ll +++ /dev/null @@ -1,66 +0,0 @@ -; RUN: opt -instcombine -gvn -S %s -; PR5733 -target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32" -target triple = "i686-linux-gnu" - -@ff_cropTbl = external global [2304 x i8] ; <[2304 x i8]*> [#uses=1] - -define void @ff_pred8x8_plane_c(i8* nocapture %src, i32 %stride) nounwind { -entry: - br i1 true, label %bb.nph41, label %for.end - - -bb.nph41: ; preds = %entry - %sub.ptr.neg37 = sub i32 0, %stride ; <i32> [#uses=1] - %tmp55 = add i32 %sub.ptr.neg37, -1 ; <i32> [#uses=1] - %tmp73 = add i32 %stride, -1 ; <i32> [#uses=2] - %sub.ptr38 = getelementptr i8* %src, i32 %tmp73 ; <i8*> [#uses=1] - %tmp60 = load i8* %sub.ptr38 ; <i8> [#uses=1] - %conv61 = zext i8 %tmp60 to i32 ; <i32> [#uses=1] - %sub62 = sub i32 0, %conv61 ; <i32> [#uses=1] - %mul63 = mul i32 %sub62, 2 ; <i32> [#uses=1] - %add65 = add nsw i32 %mul63, 0 ; <i32> [#uses=1] - %tmp71.2 = mul i32 2, %stride ; <i32> [#uses=1] - %tmp72.2 = sub i32 0, %tmp71.2 ; <i32> [#uses=1] - %tmp74.2 = add i32 %tmp72.2, %tmp73 ; <i32> [#uses=1] - %sub.ptr38.2 = getelementptr i8* %src, i32 %tmp74.2 ; <i8*> [#uses=1] - %tmp60.2 = load i8* %sub.ptr38.2 ; <i8> [#uses=1] - %conv61.2 = zext i8 %tmp60.2 to i32 ; <i32> [#uses=1] - %sub62.2 = sub i32 0, %conv61.2 ; <i32> [#uses=1] - %mul63.2 = mul i32 %sub62.2, 4 ; <i32> [#uses=1] - %add65.2 = add nsw i32 %mul63.2, %add65 ; <i32> [#uses=1] - %scevgep = getelementptr i8* %src, i32 %tmp55 ; <i8*> [#uses=1] - br label %for.end - -for.end: ; preds = %for.cond.2, %entry - %V.0.lcssa = phi i32 [ %add65.2, %bb.nph41 ], [ 0, %entry ] ; <i32> [#uses=1] - %src2.0.lcssa = phi i8* [ %scevgep, %bb.nph41 ], [ null, %entry ] ; <i8*> [#uses=1] - %mul71 = mul i32 %V.0.lcssa, 17 ; <i32> [#uses=1] - %add72 = add nsw i32 %mul71, 16 ; <i32> [#uses=1] - %shr73 = ashr i32 %add72, 5 ; <i32> [#uses=1] - br i1 true, label %bb.nph, label %for.end181 - -bb.nph: ; preds = %for.end - %arrayidx79 = getelementptr inbounds i8* %src2.0.lcssa, i32 8 ; <i8*> [#uses=1] - %tmp80 = load i8* %arrayidx79 ; <i8> [#uses=1] - %tmp9 = mul i32 %shr73, -3 ; <i32> [#uses=1] - %tmp11 = zext i8 %tmp80 to i32 ; <i32> [#uses=1] - %tmp12 = add i32 0, %tmp11 ; <i32> [#uses=1] - %tmp13 = mul i32 %tmp12, 16 ; <i32> [#uses=1] - %tmp38 = add i32 %tmp9, %tmp13 ; <i32> [#uses=1] - %tmp39 = add i32 %tmp38, 16 ; <i32> [#uses=1] - br label %for.body94 - -for.body94: ; preds = %bb.nph, %for.cond90 - %add129 = add i32 0, %tmp39 ; <i32> [#uses=1] - %shr130 = ashr i32 %add129, 5 ; <i32> [#uses=1] - %.sum4 = add i32 %shr130, 1024 ; <i32> [#uses=1] - %arrayidx132 = getelementptr inbounds [2304 x i8]* @ff_cropTbl, i32 0, i32 %.sum4 ; <i8*> [#uses=1] - %tmp133 = load i8* %arrayidx132 ; <i8> [#uses=1] - store i8 %tmp133, i8* undef - br label %for.body94 - -for.end181: ; preds = %for.cond90.for.end181_crit_edge, %for.end - ret void - -} |