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1; RUN: opt < %s -loop-reduce -S | FileCheck %s2 3; The multiply in bb2 must not be reduced to an add, as the sext causes the4; %1 argument to become negative after a while.5 6; CHECK: sext i87; CHECK: mul i328; CHECK: store i329 10target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"11target triple = "i386-apple-darwin9.6"12@table = common global [32 x [256 x i32]] zeroinitializer, align 32 ; <ptr> [#uses=2]13 14define i32 @main() nounwind {15bb4.thread:16 br label %bb217 18bb2: ; preds = %bb4, %bb2, %bb4.thread19 %i.0.reg2mem.0.ph = phi i32 [ 0, %bb4.thread ], [ %i.0.reg2mem.0.ph, %bb2 ], [ %indvar.next9, %bb4 ] ; <i32> [#uses=4]20 %j.0.reg2mem.0 = phi i32 [ 0, %bb4.thread ], [ %indvar.next, %bb2 ], [ 0, %bb4 ] ; <i32> [#uses=3]21 %0 = trunc i32 %j.0.reg2mem.0 to i8 ; <i8> [#uses=1]22 %1 = sext i8 %0 to i32 ; <i32> [#uses=1]23 %2 = mul i32 %1, %i.0.reg2mem.0.ph ; <i32> [#uses=1]24 %3 = getelementptr [32 x [256 x i32]], ptr @table, i32 0, i32 %i.0.reg2mem.0.ph, i32 %j.0.reg2mem.0 ; <ptr> [#uses=1]25 store i32 %2, ptr %3, align 426 %indvar.next = add i32 %j.0.reg2mem.0, 1 ; <i32> [#uses=2]27 %exitcond = icmp eq i32 %indvar.next, 256 ; <i1> [#uses=1]28 br i1 %exitcond, label %bb4, label %bb229 30bb4: ; preds = %bb231 %indvar.next9 = add i32 %i.0.reg2mem.0.ph, 1 ; <i32> [#uses=2]32 %exitcond10 = icmp eq i32 %indvar.next9, 32 ; <i1> [#uses=1]33 br i1 %exitcond10, label %bb5, label %bb234 35bb5: ; preds = %bb436 %4 = load i32, ptr getelementptr ([32 x [256 x i32]], ptr @table, i32 0, i32 9, i32 132), align 16 ; <i32> [#uses=1]37 %5 = icmp eq i32 %4, -1116 ; <i1> [#uses=1]38 br i1 %5, label %bb7, label %bb639 40bb6: ; preds = %bb541 tail call void @abort() noreturn nounwind42 unreachable43 44bb7: ; preds = %bb545 ret i32 046}47 48declare void @abort() noreturn nounwind49