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authorEli Bendersky <eliben@chromium.org>2013-07-15 16:09:15 -0700
committerEli Bendersky <eliben@chromium.org>2013-07-15 16:09:15 -0700
commitc6cf05cb5108f356dde97c01ee4188b0671d4542 (patch)
tree436fdc2a55296d3c202e7ef11f31be3be53efb5f /test/Analysis/RegionInfo/unreachable_bb.ll
parentc75199c649c739aade160289d93f257edc798cde (diff)
parent7dfcb84fc16b3bf6b2379713b53090757f0a45f9 (diff)
Merge commit '7dfcb84fc16b3bf6b2379713b53090757f0a45f9'
Conflicts: docs/LangRef.rst include/llvm/CodeGen/CallingConvLower.h include/llvm/IRReader/IRReader.h include/llvm/Target/TargetMachine.h lib/CodeGen/CallingConvLower.cpp lib/IRReader/IRReader.cpp lib/IRReader/LLVMBuild.txt lib/IRReader/Makefile lib/LLVMBuild.txt lib/Makefile lib/Support/MemoryBuffer.cpp lib/Support/Unix/PathV2.inc lib/Target/ARM/ARMBaseInstrInfo.cpp lib/Target/ARM/ARMISelLowering.cpp lib/Target/ARM/ARMInstrInfo.td lib/Target/ARM/ARMSubtarget.cpp lib/Target/ARM/ARMTargetMachine.cpp lib/Target/Mips/CMakeLists.txt lib/Target/Mips/MipsDelaySlotFiller.cpp lib/Target/Mips/MipsISelLowering.cpp lib/Target/Mips/MipsInstrInfo.td lib/Target/Mips/MipsSubtarget.cpp lib/Target/Mips/MipsSubtarget.h lib/Target/X86/X86FastISel.cpp lib/Target/X86/X86ISelDAGToDAG.cpp lib/Target/X86/X86ISelLowering.cpp lib/Target/X86/X86InstrControl.td lib/Target/X86/X86InstrFormats.td lib/Transforms/IPO/ExtractGV.cpp lib/Transforms/InstCombine/InstCombineCompares.cpp lib/Transforms/Utils/SimplifyLibCalls.cpp test/CodeGen/X86/fast-isel-divrem.ll test/MC/ARM/data-in-code.ll tools/Makefile tools/llvm-extract/llvm-extract.cpp tools/llvm-link/CMakeLists.txt tools/opt/CMakeLists.txt tools/opt/LLVMBuild.txt tools/opt/Makefile tools/opt/opt.cpp
Diffstat (limited to 'test/Analysis/RegionInfo/unreachable_bb.ll')
-rw-r--r--test/Analysis/RegionInfo/unreachable_bb.ll29
1 files changed, 29 insertions, 0 deletions
diff --git a/test/Analysis/RegionInfo/unreachable_bb.ll b/test/Analysis/RegionInfo/unreachable_bb.ll
new file mode 100644
index 0000000000..626ccbe304
--- /dev/null
+++ b/test/Analysis/RegionInfo/unreachable_bb.ll
@@ -0,0 +1,29 @@
+; RUN: opt -regions -analyze < %s | FileCheck %s
+
+; We should not crash if there are some bbs that are not reachable.
+define void @f() {
+entry:
+ br label %for.pre
+
+notintree: ; No predecessors!
+ br label %ret
+
+for.pre: ; preds = %entry
+ br label %for
+
+for: ; preds = %for.inc, %for.pre
+ %indvar = phi i64 [ 0, %for.pre ], [ %indvar.next, %for.inc ]
+ %exitcond = icmp ne i64 %indvar, 200
+ br i1 %exitcond, label %for.inc, label %ret
+
+for.inc: ; preds = %for
+ %indvar.next = add i64 %indvar, 1
+ br label %for
+
+ret: ; preds = %for, %notintree
+ ret void
+}
+
+; CHECK: [0] entry => <Function Return>
+; CHECK: [1] for => ret
+