| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=thumbv8.1m.main %s -o - | FileCheck %s |
| |
| define void @cbz_exit(i32* %in, i32* %res) { |
| ; CHECK-LABEL: cbz_exit: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: subs r2, r0, #4 |
| ; CHECK-NEXT: mov.w r0, #-1 |
| ; CHECK-NEXT: .LBB0_1: @ %loop |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr r3, [r2, #4]! |
| ; CHECK-NEXT: adds r0, #1 |
| ; CHECK-NEXT: cbz r3, .LBB0_2 |
| ; CHECK-NEXT: le .LBB0_1 |
| ; CHECK-NEXT: .LBB0_2: @ %exit |
| ; CHECK-NEXT: str r0, [r1] |
| ; CHECK-NEXT: bx lr |
| entry: |
| br label %loop |
| |
| loop: |
| %offset = phi i32 [ 0, %entry ], [ %next, %loop ] |
| %ptr = getelementptr i32, i32* %in, i32 %offset |
| %val = load i32, i32* %ptr |
| %next = add i32 %offset, 1 |
| %cmp = icmp eq i32 %val, 0 |
| br i1 %cmp, label %exit, label %loop |
| |
| exit: |
| store i32 %offset, i32* %res |
| ret void |
| } |
| |
| define void @cbnz_exit(i32* %in, i32* %res) { |
| ; CHECK-LABEL: cbnz_exit: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: subs r2, r0, #4 |
| ; CHECK-NEXT: mov.w r0, #-1 |
| ; CHECK-NEXT: .LBB1_1: @ %loop |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr r3, [r2, #4]! |
| ; CHECK-NEXT: adds r0, #1 |
| ; CHECK-NEXT: cbnz r3, .LBB1_2 |
| ; CHECK-NEXT: le .LBB1_1 |
| ; CHECK-NEXT: .LBB1_2: @ %exit |
| ; CHECK-NEXT: str r0, [r1] |
| ; CHECK-NEXT: bx lr |
| entry: |
| br label %loop |
| |
| loop: |
| %offset = phi i32 [ 0, %entry ], [ %next, %loop ] |
| %ptr = getelementptr i32, i32* %in, i32 %offset |
| %val = load i32, i32* %ptr |
| %next = add i32 %offset, 1 |
| %cmp = icmp ne i32 %val, 0 |
| br i1 %cmp, label %exit, label %loop |
| |
| exit: |
| store i32 %offset, i32* %res |
| ret void |
| } |
| |
| define void @cbnz_exit_too_large(i32* %in, i32* %res) { |
| ; CHECK-LABEL: cbnz_exit_too_large: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: subs r2, r0, #4 |
| ; CHECK-NEXT: mov.w r0, #-1 |
| ; CHECK-NEXT: .LBB2_1: @ %loop |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr r12, [r2, #4]! |
| ; CHECK-NEXT: .zero 4090 |
| ; CHECK-NEXT: adds r0, #1 |
| ; CHECK-NEXT: cmp.w r12, #0 |
| ; CHECK-NEXT: beq.w .LBB2_1 |
| ; CHECK-NEXT: @ %bb.2: @ %exit |
| ; CHECK-NEXT: str r0, [r1] |
| ; CHECK-NEXT: bx lr |
| entry: |
| br label %loop |
| |
| loop: |
| %offset = phi i32 [ 0, %entry ], [ %next, %loop ] |
| %ptr = getelementptr i32, i32* %in, i32 %offset |
| %val = load i32, i32* %ptr |
| %next = add i32 %offset, 1 |
| %cmp = icmp ne i32 %val, 0 |
| %size = call i32 @llvm.arm.space(i32 4090, i32 undef) |
| br i1 %cmp, label %exit, label %loop |
| |
| exit: |
| store i32 %offset, i32* %res |
| ret void |
| } |
| |
| define void @cbz_exit_minsize(i32* %in, i32* %res) #0 { |
| ; CHECK-LABEL: cbz_exit_minsize: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: movs r2, #0 |
| ; CHECK-NEXT: .LBB3_1: @ %loop |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr.w r3, [r0, r2, lsl #2] |
| ; CHECK-NEXT: adds r2, #1 |
| ; CHECK-NEXT: cmp r3, #0 |
| ; CHECK-NEXT: bne .LBB3_1 |
| ; CHECK-NEXT: @ %bb.2: @ %exit |
| ; CHECK-NEXT: subs r0, r2, #1 |
| ; CHECK-NEXT: str r0, [r1] |
| ; CHECK-NEXT: bx lr |
| entry: |
| br label %loop |
| |
| loop: |
| %offset = phi i32 [ 0, %entry ], [ %next, %loop ] |
| %ptr = getelementptr i32, i32* %in, i32 %offset |
| %val = load i32, i32* %ptr |
| %next = add i32 %offset, 1 |
| %cmp = icmp eq i32 %val, 0 |
| br i1 %cmp, label %exit, label %loop |
| |
| exit: |
| store i32 %offset, i32* %res |
| ret void |
| } |
| |
| define void @cbnz_exit_minsize(i32* %in, i32* %res) #0 { |
| ; CHECK-LABEL: cbnz_exit_minsize: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: movs r2, #0 |
| ; CHECK-NEXT: .LBB4_1: @ %loop |
| ; CHECK-NEXT: @ =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: ldr.w r3, [r0, r2, lsl #2] |
| ; CHECK-NEXT: adds r2, #1 |
| ; CHECK-NEXT: cmp r3, #0 |
| ; CHECK-NEXT: beq .LBB4_1 |
| ; CHECK-NEXT: @ %bb.2: @ %exit |
| ; CHECK-NEXT: subs r0, r2, #1 |
| ; CHECK-NEXT: str r0, [r1] |
| ; CHECK-NEXT: bx lr |
| entry: |
| br label %loop |
| |
| loop: |
| %offset = phi i32 [ 0, %entry ], [ %next, %loop ] |
| %ptr = getelementptr i32, i32* %in, i32 %offset |
| %val = load i32, i32* %ptr |
| %next = add i32 %offset, 1 |
| %cmp = icmp ne i32 %val, 0 |
| br i1 %cmp, label %exit, label %loop |
| |
| exit: |
| store i32 %offset, i32* %res |
| ret void |
| } |
| |
| attributes #0 = { minsize optsize } |
| |
| declare i32 @llvm.arm.space(i32 immarg, i32); |