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XCore target: change to Sched::Source

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This sidesteps a bug in PrescheduleNodesWithMultipleUses() which
does not check if callResources will be affected by the transformation.

llvm-svn: 190299
This commit is contained in:
Robert Lytton 2013-09-09 10:42:05 +00:00
parent 4a5772968b
commit dc8d32008e
2 changed files with 26 additions and 1 deletions
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2
lib/Target/XCore/XCoreISelLowering.cpp
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@ -79,7 +79,7 @@ XCoreTargetLowering::XCoreTargetLowering(XCoreTargetMachine &XTM)
setStackPointerRegisterToSaveRestore(XCore::SP);
setSchedulingPreference(Sched::RegPressure);
setSchedulingPreference(Sched::Source);
// Use i32 for setcc operations results (slt, sgt, ...).
setBooleanContents(ZeroOrOneBooleanContent);

25
test/CodeGen/XCore/shedulingPreference.ll Normal file
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@ -0,0 +1,25 @@
; RUN: llc < %s -march=xcore
define void @f( ) {
entry:
switch i32 undef, label %default [
i32 0, label %start
]
start:
br label %end
default:
%arg = fadd double undef, undef
%res = call double @f2(i32 undef, double %arg, double undef)
br label %end
end:
%unused = phi double [ %res, %default ], [ undef, %start ]
unreachable
}
declare double @f2(i32, double, double)