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Make SPU backend not assert on jump tables.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@103466 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -467,6 +467,9 @@ SPUInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
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// If there is only one terminator instruction, process it.
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if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) {
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if (isUncondBranch(LastInst)) {
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// Check for jump tables
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if (!LastInst->getOperand(0).isMBB())
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return true;
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TBB = LastInst->getOperand(0).getMBB();
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return false;
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} else if (isCondBranch(LastInst)) {
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21
test/CodeGen/CellSPU/jumptable.ll
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21
test/CodeGen/CellSPU/jumptable.ll
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@ -0,0 +1,21 @@
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;RUN: llc --march=cellspu %s -o - | FileCheck %s
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; This is to check that emitting jumptables doesn't crash llc
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define i32 @test(i32 %param) {
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entry:
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;CHECK: ai $4, $3, -1
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;CHECK: clgti $5, $4, 3
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;CHECK: brnz $5,.LBB0_2
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switch i32 %param, label %bb1 [
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i32 1, label %bb3
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i32 2, label %bb2
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i32 3, label %bb3
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i32 4, label %bb1
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]
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bb1:
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ret i32 1
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bb2:
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ret i32 2
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bb3:
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ret i32 3
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}
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