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1; RUN: opt < %s -S -passes=loop-unroll -unroll-threshold=150 | FileCheck %s2;3; Verify that trunc i64 to i32 is considered free by loop unrolling4; heuristics when i32 is a native type.5; This should result in full unrolling this loop with size=7, TC=19.6; If the trunc were not free we would have 8*19=152 > 150.7 8target 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"9 10; Check that for.body was unrolled 19 times.11; CHECK-LABEL: @test(12; CHECK: %0 = load13; CHECK: %conv = sext i8 %0 to i3214; CHECK: %add.1 = add nsw i32 %conv.1, %conv15; CHECK: %add.18 = add nsw i32 %conv.18, %add.1716; CHECK: ret i32 %add.1817define i32 @test(ptr %arr) nounwind uwtable readnone {18entry:19 br label %for.body20 21for.body: ; preds = %for.body, %entry22 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]23 %sum.02 = phi i32 [ 0, %entry ], [ %add, %for.body ]24 %arrayidx = getelementptr inbounds i8, ptr %arr, i64 %indvars.iv25 %0 = load i8, ptr %arrayidx, align 126 %conv = sext i8 %0 to i3227 %add = add nsw i32 %conv, %sum.0228 %indvars.iv.next = add i64 %indvars.iv, 129 %lftr.wideiv1 = trunc i64 %indvars.iv.next to i3230 %exitcond2 = icmp eq i32 %lftr.wideiv1, 1931 br i1 %exitcond2, label %for.end, label %for.body32 33for.end: ; preds = %for.body34 %add.lcssa = phi i32 [ %add, %for.body ]35 ret i32 %add.lcssa36}37