25 lines
830 B
LLVM
25 lines
830 B
LLVM
; RUN: opt < %s -indvars -loop-deletion -S |FileCheck %s
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; Check IndVarSimplify should replace exit value even if the expansion cost
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; is high because the loop can be deleted after the exit value rewrite.
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;
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; CHECK-LABEL: @_Z3fooPKcjj(
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; CHECK: udiv
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; CHECK: [[LABEL:^[a-zA-Z0-9_.]+]]:
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; CHECK-NOT: br {{.*}} [[LABEL]]
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define i32 @_Z3fooPKcjj(i8* nocapture readnone %s, i32 %len, i32 %c) #0 {
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entry:
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br label %while.cond
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while.cond: ; preds = %while.cond, %entry
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%klen.0 = phi i32 [ %len, %entry ], [ %sub, %while.cond ]
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%cmp = icmp ugt i32 %klen.0, 11
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%sub = add i32 %klen.0, -12
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br i1 %cmp, label %while.cond, label %while.end
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while.end: ; preds = %while.cond
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%klen.0.lcssa = phi i32 [ %klen.0, %while.cond ]
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ret i32 %klen.0.lcssa
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}
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