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27 lines
635 B
LLVM
27 lines
635 B
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
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; The comparison uses the pre-inc value, which could lead LSR to
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; try to compute -INT64_MIN.
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; CHECK: movabsq $-9223372036854775808, %rax
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; CHECK: cmpq %rax, %rbx
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; CHECK: sete %al
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declare i64 @bar()
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define i1 @foo() nounwind {
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entry:
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br label %for.cond.i
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for.cond.i:
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%indvar = phi i64 [ 0, %entry ], [ %indvar.next, %for.cond.i ]
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%t = call i64 @bar()
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%indvar.next = add i64 %indvar, 1
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%s = icmp ne i64 %indvar.next, %t
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br i1 %s, label %for.cond.i, label %__ABContainsLabel.exit
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__ABContainsLabel.exit:
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%cmp = icmp eq i64 %indvar, 9223372036854775807
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ret i1 %cmp
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}
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