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32 lines
987 B
LLVM
32 lines
987 B
LLVM
; RUN: llc -march=x86 < %s | FileCheck %s
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; The comparison happens after the relevant use, so the stride can easily
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; be changed. The comparison can be done in a narrower mode than the
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; induction variable.
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; TODO: By making the first store post-increment as well, the loop setup
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; could be made simpler.
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define void @foo() nounwind {
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; CHECK: foo:
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; CHECK-NOT: ret
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; CHECK: cmpl $10
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; CHECK: ret
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entry:
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br label %loop
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loop:
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%indvar = phi i32 [ 0, %entry ], [ %i.2.0.us1534, %loop ] ; <i32> [#uses=1]
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%i.2.0.us1534 = add i32 %indvar, 1 ; <i32> [#uses=3]
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%tmp628.us1540 = shl i32 %i.2.0.us1534, 1 ; <i32> [#uses=1]
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%tmp645646647.us1547 = sext i32 %tmp628.us1540 to i64 ; <i64> [#uses=1]
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store i64 %tmp645646647.us1547, i64* null
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%tmp611.us1535 = icmp eq i32 %i.2.0.us1534, 4 ; <i1> [#uses=2]
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%tmp623.us1538 = select i1 %tmp611.us1535, i32 6, i32 0 ; <i32> [#uses=1]
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store i32 %tmp623.us1538, i32* null
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br i1 %tmp611.us1535, label %exit, label %loop
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exit:
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ret void
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}
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