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Make SPU backend not assert on jump tables. 

llvm-svn: 103466
This commit is contained in:
Kalle Raiskila 2010-05-11 11:00:02 +00:00
parent be49fc5ea2
commit 9dd3ef8d01
2 changed files with 24 additions and 0 deletions
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3
llvm/lib/Target/CellSPU/SPUInstrInfo.cpp
View File

@ -467,6 +467,9 @@ SPUInstrInfo::AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB,
// If there is only one terminator instruction, process it. // If there is only one terminator instruction, process it.
if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) { if (I == MBB.begin() || !isUnpredicatedTerminator(--I)) {
if (isUncondBranch(LastInst)) { if (isUncondBranch(LastInst)) {
// Check for jump tables
if (!LastInst->getOperand(0).isMBB())
return true;
TBB = LastInst->getOperand(0).getMBB(); TBB = LastInst->getOperand(0).getMBB();
return false; return false;
} else if (isCondBranch(LastInst)) { } else if (isCondBranch(LastInst)) {

21
llvm/test/CodeGen/CellSPU/jumptable.ll Normal file
View File

@ -0,0 +1,21 @@
;RUN: llc --march=cellspu %s -o - | FileCheck %s
; This is to check that emitting jumptables doesn't crash llc
define i32 @test(i32 %param) {
entry:
;CHECK: ai $4, $3, -1
;CHECK: clgti $5, $4, 3
;CHECK: brnz $5,.LBB0_2
switch i32 %param, label %bb1 [
i32 1, label %bb3
i32 2, label %bb2
i32 3, label %bb3
i32 4, label %bb1
]
bb1:
ret i32 1
bb2:
ret i32 2
bb3:
ret i32 3
}