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280ea1a746
Turn them into noop KILL instructions instead. This lets the scavenger know when super-registers are killed and defined. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@128645 91177308-0d34-0410-b5e6-96231b3b80d8
17 lines
519 B
LLVM
17 lines
519 B
LLVM
; RUN: llc < %s -march=bfin -join-liveintervals=0 -verify-machineinstrs
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; RUN: llc < %s -march=bfin -join-liveintervals=0 -verify-machineinstrs -regalloc=greedy
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; Provoke an error in LowerSubregsPass::LowerExtract where the live range of a
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; super-register is illegally extended.
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define i16 @f(i16 %x1, i16 %x2, i16 %x3, i16 %x4) {
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%y1 = add i16 %x1, 1
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%y2 = add i16 %x2, 2
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%y3 = add i16 %x3, 3
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%y4 = add i16 %x4, 4
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%z12 = add i16 %y1, %y2
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%z34 = add i16 %y3, %y4
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%p = add i16 %z12, %z34
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ret i16 %p
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}
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