; RUN: llc -verify-machineinstrs -mcpu=i386 < %s 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 = "i386-pc-linux-gnu" ; The bb.i basic block gets split while emitting the schedule because ; -mcpu=i386 doesn't have CMOV.' ; ; That causes the PHI to be updated wrong because the jumptable data structure is remembering the original MBB. ; ; -cgp-critical-edge-splitting=0 prevents the edge to PHI from being split. @.str146 = external constant [4 x i8], align 1 @.str706 = external constant [4 x i8], align 1 @.str1189 = external constant [5 x i8], align 1 declare i32 @memcmp(i8* nocapture, i8* nocapture, i32) nounwind readonly declare i32 @strlen(i8* nocapture) nounwind readonly define hidden zeroext i8 @f(i8* %this, i8* %Name.0, i32 %Name.1, i8* noalias %NameLoc, i8* %Operands) nounwind align 2 { bb.i: %0 = icmp eq i8 undef, 0 %iftmp.285.0 = select i1 %0, i8* getelementptr inbounds ([5 x i8], [5 x i8]* @.str1189, i32 0, i32 0), i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str706, i32 0, i32 0) %1 = call i32 @strlen(i8* %iftmp.285.0) nounwind readonly switch i32 %Name.1, label %_ZNK4llvm12StringSwitchINS_9StringRefES1_E7DefaultERKS1_.exit [ i32 3, label %bb1.i i32 4, label %bb1.i1237 i32 5, label %bb1.i1266 i32 6, label %bb1.i1275 i32 2, label %bb1.i1434 i32 8, label %bb1.i1523 i32 7, label %bb1.i1537 ] bb1.i: ; preds = %bb.i unreachable bb1.i1237: ; preds = %bb.i br i1 undef, label %bb.i1820, label %bb1.i1241 bb1.i1241: ; preds = %bb1.i1237 unreachable bb1.i1266: ; preds = %bb.i unreachable bb1.i1275: ; preds = %bb.i unreachable bb1.i1434: ; preds = %bb.i unreachable bb1.i1523: ; preds = %bb.i unreachable bb1.i1537: ; preds = %bb.i unreachable bb.i1820: ; preds = %bb1.i1237 br label %_ZNK4llvm12StringSwitchINS_9StringRefES1_E7DefaultERKS1_.exit _ZNK4llvm12StringSwitchINS_9StringRefES1_E7DefaultERKS1_.exit: ; preds = %bb.i1820, %bb.i %PatchedName.0.0 = phi i8* [ undef, %bb.i1820 ], [ %Name.0, %bb.i ] br i1 undef, label %bb141, label %_ZNK4llvm9StringRef10startswithES0_.exit _ZNK4llvm9StringRef10startswithES0_.exit: ; preds = %_ZNK4llvm12StringSwitchINS_9StringRefES1_E7DefaultERKS1_.exit %2 = call i32 @memcmp(i8* %PatchedName.0.0, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str146, i32 0, i32 0), i32 3) nounwind readonly unreachable bb141: ; preds = %_ZNK4llvm12StringSwitchINS_9StringRefES1_E7DefaultERKS1_.exit unreachable }