34 lines
945 B
LLVM
34 lines
945 B
LLVM
; RUN: opt < %s -analyze -scalar-evolution 2>&1 | FileCheck %s
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; PR2070
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; CHECK: Printing analysis 'Scalar Evolution Analysis' for function 'a'
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; CHECK-NOT: smax
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define i32 @a(i32 %x) nounwind {
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entry:
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icmp sgt i32 %x, 1 ; <i1>:0 [#uses=1]
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br i1 %0, label %bb.nph, label %bb2
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bb.nph: ; preds = %entry
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br label %bb
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bb: ; preds = %bb1, %bb.nph
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%z.02 = phi i32 [ %1, %bb1 ], [ 1, %bb.nph ] ; <i32> [#uses=1]
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%i.01 = phi i32 [ %2, %bb1 ], [ 1, %bb.nph ] ; <i32> [#uses=2]
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mul i32 %z.02, %i.01 ; <i32>:1 [#uses=2]
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add i32 %i.01, 1 ; <i32>:2 [#uses=2]
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br label %bb1
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bb1: ; preds = %bb
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icmp slt i32 %2, %x ; <i1>:3 [#uses=1]
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br i1 %3, label %bb, label %bb1.bb2_crit_edge
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bb1.bb2_crit_edge: ; preds = %bb1
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%.lcssa = phi i32 [ %1, %bb1 ] ; <i32> [#uses=1]
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br label %bb2
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bb2: ; preds = %bb1.bb2_crit_edge, %entry
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%z.0.lcssa = phi i32 [ %.lcssa, %bb1.bb2_crit_edge ], [ 1, %entry ] ; <i32> [#uses=1]
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ret i32 %z.0.lcssa
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}
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