| ; RUN: opt < %s -loop-reduce -S | FileCheck %s |
| |
| ; The multiply in bb2 must not be reduced to an add, as the sext causes the |
| ; %1 argument to become negative after a while. |
| |
| ; CHECK: sext i8 |
| ; CHECK: mul i32 |
| ; CHECK: store i32 |
| |
| 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" |
| target triple = "i386-apple-darwin9.6" |
| @table = common global [32 x [256 x i32]] zeroinitializer, align 32 ; <[32 x [256 x i32]]*> [#uses=2] |
| |
| define i32 @main() nounwind { |
| bb4.thread: |
| br label %bb2 |
| |
| bb2: ; preds = %bb4, %bb2, %bb4.thread |
| %i.0.reg2mem.0.ph = phi i32 [ 0, %bb4.thread ], [ %i.0.reg2mem.0.ph, %bb2 ], [ %indvar.next9, %bb4 ] ; <i32> [#uses=4] |
| %j.0.reg2mem.0 = phi i32 [ 0, %bb4.thread ], [ %indvar.next, %bb2 ], [ 0, %bb4 ] ; <i32> [#uses=3] |
| %0 = trunc i32 %j.0.reg2mem.0 to i8 ; <i8> [#uses=1] |
| %1 = sext i8 %0 to i32 ; <i32> [#uses=1] |
| %2 = mul i32 %1, %i.0.reg2mem.0.ph ; <i32> [#uses=1] |
| %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] |
| store i32 %2, i32* %3, align 4 |
| %indvar.next = add i32 %j.0.reg2mem.0, 1 ; <i32> [#uses=2] |
| %exitcond = icmp eq i32 %indvar.next, 256 ; <i1> [#uses=1] |
| br i1 %exitcond, label %bb4, label %bb2 |
| |
| bb4: ; preds = %bb2 |
| %indvar.next9 = add i32 %i.0.reg2mem.0.ph, 1 ; <i32> [#uses=2] |
| %exitcond10 = icmp eq i32 %indvar.next9, 32 ; <i1> [#uses=1] |
| br i1 %exitcond10, label %bb5, label %bb2 |
| |
| bb5: ; preds = %bb4 |
| %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] |
| %5 = icmp eq i32 %4, -1116 ; <i1> [#uses=1] |
| br i1 %5, label %bb7, label %bb6 |
| |
| bb6: ; preds = %bb5 |
| tail call void @abort() noreturn nounwind |
| unreachable |
| |
| bb7: ; preds = %bb5 |
| ret i32 0 |
| } |
| |
| declare void @abort() noreturn nounwind |
