48 lines · plain
1; RUN: opt < %s -loop-reduce -S | FileCheck %s2 3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"4target triple = "x86_64-unknown-linux-gnu"5 6@a = global i32 0, align 47@b = global i8 0, align 18@c = global [4 x i8] zeroinitializer, align 19 10; Just make sure we don't generate code with uses not dominated by defs.11; CHECK-LABEL: @main(12define i32 @main() {13entry:14 %a0 = load i32, ptr @a, align 415 %cmpa = icmp slt i32 %a0, 416 br i1 %cmpa, label %preheader, label %for.end17 18preheader:19 %b0 = load i8, ptr @b, align 120 %b0sext = sext i8 %b0 to i6421 br label %for.body22 23for.body:24 %iv = phi i64 [ 0, %preheader ], [ %iv.next, %lor.false ]25 %mul = mul nsw i64 %b0sext, %iv26 %multrunc = trunc i64 %mul to i3227 %cmp = icmp eq i32 %multrunc, 028 br i1 %cmp, label %lor.false, label %if.then29 30lor.false:31 %cgep = getelementptr inbounds [4 x i8], ptr @c, i64 0, i64 %iv32 %ci = load i8, ptr %cgep, align 133 %cisext = sext i8 %ci to i3234 %ivtrunc = trunc i64 %iv to i3235 %cmp2 = icmp eq i32 %cisext, %ivtrunc36 %iv.next = add i64 %iv, 137 br i1 %cmp2, label %for.body, label %if.then38 39if.then:40 tail call void @abort()41 unreachable42 43for.end:44 ret i32 045}46 47declare void @abort()48