1 ; RUN: opt < %s -loop-reduce -S | FileCheck %s 2 3 ; The multiply in bb2 must not be reduced to an add, as the sext causes the 4 ; %1 argument to become negative after a while. 5 6 ; CHECK: sext i8 7 ; CHECK: mul i32 8 ; CHECK: store i32 9 10 target 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" 11 target triple = "i386-apple-darwin9.6" 12 @table = common global [32 x [256 x i32]] zeroinitializer, align 32 ; <[32 x [256 x i32]]*> [#uses=2] 13 14 define i32 @main() nounwind { 15 bb4.thread: 16 br label %bb2 17 18 bb2: ; preds = %bb4, %bb2, %bb4.thread 19 %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]], [32 x [256 x i32]]* @table, i32 0, i32 %i.0.reg2mem.0.ph, i32 %j.0.reg2mem.0 ; <i32*> [#uses=1] 25 store i32 %2, i32* %3, align 4 26 %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 %bb2 29 30 bb4: ; preds = %bb2 31 %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 %bb2 34 35 bb5: ; preds = %bb4 36 %4 = load i32, i32* getelementptr ([32 x [256 x i32]], [32 x [256 x i32]]* @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 %bb6 39 40 bb6: ; preds = %bb5 41 tail call void @abort() noreturn nounwind 42 unreachable 43 44 bb7: ; preds = %bb5 45 ret i32 0 46 } 47 48 declare void @abort() noreturn nounwind 49
