ac24238002
Some passes has limitation that only support simple terminators: branch/unreachable/return. Right now, they ask the pass manager to add LowerSwitch pass to eliminate `switch`. Let's manage such kind of pass dependency by ourselves. Also add the assertion in the related passes.
24 lines
582 B
LLVM
24 lines
582 B
LLVM
; RUN: opt -S -passes='lowerswitch,structurizecfg' %s -o - | FileCheck %s
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; The structurizecfg pass cannot handle switch instructions, so we need to
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; make sure the lower switch pass is always run before structurizecfg.
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; CHECK-LABEL: @switch
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define void @switch(ptr addrspace(1) %out, i32 %cond) nounwind {
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entry:
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; CHECK: icmp
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switch i32 %cond, label %done [ i32 0, label %zero]
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; CHECK: zero:
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zero:
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; CHECK: store i32 7, ptr addrspace(1) %out
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store i32 7, ptr addrspace(1) %out
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; CHECK: br label %done
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br label %done
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; CHECK: done:
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done:
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; CHECK: ret void
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ret void
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}
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