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Catch runaway ARMConstantIslandPass even in -Asserts builds. 

The pass is prone to looping, and it is better to crash than loop
forever, even in a -Asserts build.

<rdar://problem/10660175>

llvm-svn: 147806
This commit is contained in:
Jakob Stoklund Olesen 2012-01-09 22:16:24 +00:00
parent 29ba4f97e6
commit 1a80e3a26b
1 changed files with 2 additions and 2 deletions
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4
llvm/lib/Target/ARM/ARMConstantIslandPass.cpp
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@ -435,7 +435,7 @@ bool ARMConstantIslands::runOnMachineFunction(MachineFunction &mf) {
for (unsigned i = 0, e = CPUsers.size(); i != e; ++i)
CPChange |= HandleConstantPoolUser(i);
if (CPChange && ++NoCPIters > 30)
llvm_unreachable("Constant Island pass failed to converge!");
report_fatal_error("Constant Island pass failed to converge!");
DEBUG(dumpBBs());
// Clear NewWaterList now. If we split a block for branches, it should
@ -447,7 +447,7 @@ bool ARMConstantIslands::runOnMachineFunction(MachineFunction &mf) {
for (unsigned i = 0, e = ImmBranches.size(); i != e; ++i)
BRChange |= FixUpImmediateBr(ImmBranches[i]);
if (BRChange && ++NoBRIters > 30)
llvm_unreachable("Branch Fix Up pass failed to converge!");
report_fatal_error("Branch Fix Up pass failed to converge!");
DEBUG(dumpBBs());
if (!CPChange && !BRChange)