1; RUN: opt < %s -loop-reduce -S | FileCheck %s 2 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 4 7@b = global i8 0, align 1 8@c = global [4 x i8] zeroinitializer, align 1 9 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, i32* @a, align 4 15 %cmpa = icmp slt i32 %a0, 4 16 br i1 %cmpa, label %preheader, label %for.end 17 18preheader: 19 %b0 = load i8, i8* @b, align 1 20 %b0sext = sext i8 %b0 to i64 21 br label %for.body 22 23for.body: 24 %iv = phi i64 [ 0, %preheader ], [ %iv.next, %lor.false ] 25 %mul = mul nsw i64 %b0sext, %iv 26 %multrunc = trunc i64 %mul to i32 27 %cmp = icmp eq i32 %multrunc, 0 28 br i1 %cmp, label %lor.false, label %if.then 29 30lor.false: 31 %cgep = getelementptr inbounds [4 x i8], [4 x i8]* @c, i64 0, i64 %iv 32 %ci = load i8, i8* %cgep, align 1 33 %cisext = sext i8 %ci to i32 34 %ivtrunc = trunc i64 %iv to i32 35 %cmp2 = icmp eq i32 %cisext, %ivtrunc 36 %iv.next = add i64 %iv, 1 37 br i1 %cmp2, label %for.body, label %if.then 38 39if.then: 40 tail call void @abort() 41 unreachable 42 43for.end: 44 ret i32 0 45} 46 47declare void @abort() 48