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- ; RUN: opt -S -unroll-runtime -loop-unroll < %s | FileCheck %s
- target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
- ;; Check that we don't emit expensive instructions to compute trip
- ;; counts when unrolling loops.
- define i32 @test(i64 %v12, i8* %array, i64* %loc) {
- ; CHECK-LABEL: @test(
- ; CHECK-NOT: udiv
- entry:
- %step = load i64, i64* %loc, !range !0
- br label %loop
- loop: ; preds = %entry, %loop
- %k.015 = phi i64 [ %v15, %loop ], [ %v12, %entry ]
- %v14 = getelementptr inbounds i8, i8* %array, i64 %k.015
- store i8 0, i8* %v14
- %v15 = add nuw nsw i64 %k.015, %step
- %v16 = icmp slt i64 %v15, 8193
- br i1 %v16, label %loop, label %loopexit
- loopexit: ; preds = %loop
- ret i32 0
- }
- !0 = !{i64 1, i64 100}
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