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| author | Dan Gohman <gohman@apple.com> | 2010-07-19 22:48:56 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-07-19 22:48:56 +0000 |
| commit | c6e59b71f50c7c77bc448a936dba8e84d90911e8 (patch) | |
| tree | 91d6867c5e9b1bc36fc3911e50843adad38a63ea | |
| parent | d70f57b254114841892425a40944268d38ae0bcd (diff) | |
After a custom inserter, in a block which has constant instructions,
update the current basic block in addition to the current insert
position, so that they remain consistent. This fixes rdar://8204072.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108765 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/CodeGen/SelectionDAG/FastISel.cpp | 1 | ||||
| -rw-r--r-- | test/CodeGen/X86/fast-isel-atomic.ll | 16 |
2 files changed, 17 insertions, 0 deletions
diff --git a/lib/CodeGen/SelectionDAG/FastISel.cpp b/lib/CodeGen/SelectionDAG/FastISel.cpp index cff7ace536..1fb20f1dc0 100644 --- a/lib/CodeGen/SelectionDAG/FastISel.cpp +++ b/lib/CodeGen/SelectionDAG/FastISel.cpp @@ -276,6 +276,7 @@ std::pair<unsigned, bool> FastISel::getRegForGEPIndex(const Value *Idx) { void FastISel::recomputeInsertPt() { if (getLastLocalValue()) { FuncInfo.InsertPt = getLastLocalValue(); + FuncInfo.MBB = FuncInfo.InsertPt->getParent(); ++FuncInfo.InsertPt; } else FuncInfo.InsertPt = FuncInfo.MBB->getFirstNonPHI(); diff --git a/test/CodeGen/X86/fast-isel-atomic.ll b/test/CodeGen/X86/fast-isel-atomic.ll new file mode 100644 index 0000000000..f8eee9caa6 --- /dev/null +++ b/test/CodeGen/X86/fast-isel-atomic.ll @@ -0,0 +1,16 @@ +; RUN: llc < %s -O0 -march=x86-64 +; rdar://8204072 + +@sc = external global i8 +@uc = external global i8 + +declare i8 @llvm.atomic.load.and.i8.p0i8(i8* nocapture, i8) nounwind + +define void @test_fetch_and_op() nounwind { +entry: + %tmp40 = call i8 @llvm.atomic.load.and.i8.p0i8(i8* @sc, i8 11) ; <i8> [#uses=1] + store i8 %tmp40, i8* @sc + %tmp41 = call i8 @llvm.atomic.load.and.i8.p0i8(i8* @uc, i8 11) ; <i8> [#uses=1] + store i8 %tmp41, i8* @uc + ret void +} |