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57 lines
796 B
LLVM
57 lines
796 B
LLVM
; RUN: llvm-as %s -o - | llvm-dis > %t1.ll
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; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
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; RUN: diff %t1.ll %t2.ll
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;; This is an irreducible flow graph
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define void @"irreducible"(i1 %cond)
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begin
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br i1 %cond, label %X, label %Y
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X:
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br label %Y
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Y:
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br label %X
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end
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;; This is a pair of loops that share the same header
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define void @"sharedheader"(i1 %cond)
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begin
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br label %A
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A:
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br i1 %cond, label %X, label %Y
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X:
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br label %A
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Y:
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br label %A
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end
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;; This is a simple nested loop
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define void @"nested"(i1 %cond1, i1 %cond2, i1 %cond3)
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begin
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br label %Loop1
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Loop1:
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br label %Loop2
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Loop2:
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br label %Loop3
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Loop3:
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br i1 %cond3, label %Loop3, label %L3Exit
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L3Exit:
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br i1 %cond2, label %Loop2, label %L2Exit
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L2Exit:
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br i1 %cond1, label %Loop1, label %L1Exit
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L1Exit:
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ret void
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end
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