1 ; RUN: llvm-as < %s | opt -loop-reduce | llvm-dis | grep mul | count 3
2 ; The multiply in bb2 must not be reduced to an add, as the sext causes the
3 ; %1 argument to become negative after a while.
5 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"
6 target triple = "i386-apple-darwin9.6"
7 @table = common global [32 x [256 x i32]] zeroinitializer, align 32 ; <[32 x [256 x i32]]*> [#uses=2]
9 define i32 @main() nounwind {
13 bb2: ; preds = %bb4, %bb2, %bb4.thread
14 %i.0.reg2mem.0.ph = phi i32 [ 0, %bb4.thread ], [ %i.0.reg2mem.0.ph, %bb2 ], [ %indvar.next9, %bb4 ] ; <i32> [#uses=4]
15 %j.0.reg2mem.0 = phi i32 [ 0, %bb4.thread ], [ %indvar.next, %bb2 ], [ 0, %bb4 ] ; <i32> [#uses=3]
16 %0 = trunc i32 %j.0.reg2mem.0 to i8 ; <i8> [#uses=1]
17 %1 = sext i8 %0 to i32 ; <i32> [#uses=1]
18 %2 = mul i32 %1, %i.0.reg2mem.0.ph ; <i32> [#uses=1]
19 %3 = getelementptr [32 x [256 x i32]]* @table, i32 0, i32 %i.0.reg2mem.0.ph, i32 %j.0.reg2mem.0 ; <i32*> [#uses=1]
20 store i32 %2, i32* %3, align 4
21 %indvar.next = add i32 %j.0.reg2mem.0, 1 ; <i32> [#uses=2]
22 %exitcond = icmp eq i32 %indvar.next, 256 ; <i1> [#uses=1]
23 br i1 %exitcond, label %bb4, label %bb2
26 %indvar.next9 = add i32 %i.0.reg2mem.0.ph, 1 ; <i32> [#uses=2]
27 %exitcond10 = icmp eq i32 %indvar.next9, 32 ; <i1> [#uses=1]
28 br i1 %exitcond10, label %bb5, label %bb2
31 %4 = load i32* getelementptr ([32 x [256 x i32]]* @table, i32 0, i32 9, i32 132), align 16 ; <i32> [#uses=1]
32 %5 = icmp eq i32 %4, -1116 ; <i1> [#uses=1]
33 br i1 %5, label %bb7, label %bb6
36 tail call void @abort() noreturn nounwind
43 declare void @abort() noreturn nounwind