1*0bf75d85SWang, Xin10; RUN: opt -passes='hardware-loops<force-hardware-loops>' -S %s -o - | FileCheck %s --check-prefix=CHECK 2*0bf75d85SWang, Xin10; RUN: opt -passes='hardware-loops<force-hardware-loops;hardware-loop-decrement=1>' -S %s -o - | FileCheck %s --check-prefix=CHECK 3*0bf75d85SWang, Xin10; RUN: opt -passes='hardware-loops<force-hardware-loops;hardware-loop-counter-bitwidth=32>' -S %s -o - | FileCheck %s --check-prefix=CHECK 4*0bf75d85SWang, Xin10 5*0bf75d85SWang, Xin10define void @while_lt(i32 %i, i32 %N, ptr nocapture %A) { 6*0bf75d85SWang, Xin10; CHECK-LABEL: @while_lt( 7*0bf75d85SWang, Xin10; CHECK-NEXT: entry: 8*0bf75d85SWang, Xin10; CHECK-NEXT: [[CMP4:%.*]] = icmp ult i32 [[I:%.*]], [[N:%.*]] 9*0bf75d85SWang, Xin10; CHECK-NEXT: br i1 [[CMP4]], label [[WHILE_BODY_PREHEADER:%.*]], label [[WHILE_END:%.*]] 10*0bf75d85SWang, Xin10; CHECK: while.body.preheader: 11*0bf75d85SWang, Xin10; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[N]], [[I]] 12*0bf75d85SWang, Xin10; CHECK-NEXT: call void @llvm.set.loop.iterations.i32(i32 [[TMP0]]) 13*0bf75d85SWang, Xin10; CHECK-NEXT: br label [[WHILE_BODY:%.*]] 14*0bf75d85SWang, Xin10; CHECK: while.body: 15*0bf75d85SWang, Xin10; CHECK-NEXT: [[I_ADDR_05:%.*]] = phi i32 [ [[INC:%.*]], [[WHILE_BODY]] ], [ [[I]], [[WHILE_BODY_PREHEADER]] ] 16*0bf75d85SWang, Xin10; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i32 [[I_ADDR_05]] 17*0bf75d85SWang, Xin10; CHECK-NEXT: store i32 [[I_ADDR_05]], ptr [[ARRAYIDX]], align 4 18*0bf75d85SWang, Xin10; CHECK-NEXT: [[INC]] = add nuw i32 [[I_ADDR_05]], 1 19*0bf75d85SWang, Xin10; CHECK-NEXT: [[TMP1:%.*]] = call i1 @llvm.loop.decrement.i32(i32 1) 20*0bf75d85SWang, Xin10; CHECK-NEXT: br i1 [[TMP1]], label [[WHILE_BODY]], label [[WHILE_END]] 21*0bf75d85SWang, Xin10; CHECK: while.end: 22*0bf75d85SWang, Xin10; CHECK-NEXT: ret void 23*0bf75d85SWang, Xin10entry: 24*0bf75d85SWang, Xin10 %cmp4 = icmp ult i32 %i, %N 25*0bf75d85SWang, Xin10 br i1 %cmp4, label %while.body, label %while.end 26*0bf75d85SWang, Xin10 27*0bf75d85SWang, Xin10while.body: 28*0bf75d85SWang, Xin10 %i.addr.05 = phi i32 [ %inc, %while.body ], [ %i, %entry ] 29*0bf75d85SWang, Xin10 %arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.addr.05 30*0bf75d85SWang, Xin10 store i32 %i.addr.05, ptr %arrayidx, align 4 31*0bf75d85SWang, Xin10 %inc = add nuw i32 %i.addr.05, 1 32*0bf75d85SWang, Xin10 %exitcond = icmp eq i32 %inc, %N 33*0bf75d85SWang, Xin10 br i1 %exitcond, label %while.end, label %while.body 34*0bf75d85SWang, Xin10 35*0bf75d85SWang, Xin10while.end: 36*0bf75d85SWang, Xin10 ret void 37*0bf75d85SWang, Xin10} 38