| ; RUN: opt -passes='hardware-loops<force-hardware-loops>' -S %s -o - | FileCheck %s --check-prefix=CHECK |
| ; RUN: opt -passes='hardware-loops<force-hardware-loops;hardware-loop-decrement=1>' -S %s -o - | FileCheck %s --check-prefix=CHECK |
| ; RUN: opt -passes='hardware-loops<force-hardware-loops;hardware-loop-counter-bitwidth=32>' -S %s -o - | FileCheck %s --check-prefix=CHECK |
| |
| define void @while_lt(i32 %i, i32 %N, ptr nocapture %A) { |
| ; CHECK-LABEL: @while_lt( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CMP4:%.*]] = icmp ult i32 [[I:%.*]], [[N:%.*]] |
| ; CHECK-NEXT: br i1 [[CMP4]], label [[WHILE_BODY_PREHEADER:%.*]], label [[WHILE_END:%.*]] |
| ; CHECK: while.body.preheader: |
| ; CHECK-NEXT: [[TMP0:%.*]] = sub i32 [[N]], [[I]] |
| ; CHECK-NEXT: call void @llvm.set.loop.iterations.i32(i32 [[TMP0]]) |
| ; CHECK-NEXT: br label [[WHILE_BODY:%.*]] |
| ; CHECK: while.body: |
| ; CHECK-NEXT: [[I_ADDR_05:%.*]] = phi i32 [ [[INC:%.*]], [[WHILE_BODY]] ], [ [[I]], [[WHILE_BODY_PREHEADER]] ] |
| ; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[A:%.*]], i32 [[I_ADDR_05]] |
| ; CHECK-NEXT: store i32 [[I_ADDR_05]], ptr [[ARRAYIDX]], align 4 |
| ; CHECK-NEXT: [[INC]] = add nuw i32 [[I_ADDR_05]], 1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = call i1 @llvm.loop.decrement.i32(i32 1) |
| ; CHECK-NEXT: br i1 [[TMP1]], label [[WHILE_BODY]], label [[WHILE_END]] |
| ; CHECK: while.end: |
| ; CHECK-NEXT: ret void |
| entry: |
| %cmp4 = icmp ult i32 %i, %N |
| br i1 %cmp4, label %while.body, label %while.end |
| |
| while.body: |
| %i.addr.05 = phi i32 [ %inc, %while.body ], [ %i, %entry ] |
| %arrayidx = getelementptr inbounds i32, ptr %A, i32 %i.addr.05 |
| store i32 %i.addr.05, ptr %arrayidx, align 4 |
| %inc = add nuw i32 %i.addr.05, 1 |
| %exitcond = icmp eq i32 %inc, %N |
| br i1 %exitcond, label %while.end, label %while.body |
| |
| while.end: |
| ret void |
| } |