36 lines
850 B
LLVM
36 lines
850 B
LLVM
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; RUN: opt < %s -indvars -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
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target triple = "x86_64-unknown-linux-gnu"
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declare void @foo(i64)
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; CHECK-LABEL: @test
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define void @test(i64 %a) {
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entry:
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br label %outer_header
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outer_header:
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%i = phi i64 [20, %entry], [%i.next, %outer_latch]
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%i.next = add nuw nsw i64 %i, 1
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br label %inner_header
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inner_header:
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%j = phi i64 [1, %outer_header], [%j.next, %inner_header]
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%cmp = icmp ult i64 %j, %i.next
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; CHECK-NOT: select
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%s = select i1 %cmp, i64 %j, i64 %i
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; CHECK: call void @foo(i64 %j)
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call void @foo(i64 %s)
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%j.next = add nuw nsw i64 %j, 1
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%cond = icmp ult i64 %j, %i
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br i1 %cond, label %inner_header, label %outer_latch
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outer_latch:
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%cond2 = icmp ne i64 %i.next, 40
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br i1 %cond2, label %outer_header, label %return
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return:
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ret void
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}
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