| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=thumbv8m.main-none-none-eabi %s -o - -verify-machineinstrs | FileCheck %s |
| |
| declare i32 @fn(i32) #0 |
| |
| define i32 @f1(i32 %a) #0 { |
| ; CHECK-LABEL: f1: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: .save {r4, lr} |
| ; CHECK-NEXT: push {r4, lr} |
| ; CHECK-NEXT: mov r4, r0 |
| ; CHECK-NEXT: bl fn |
| ; CHECK-NEXT: movs r0, #0 |
| ; CHECK-NEXT: cbz r4, .LBB0_2 |
| ; CHECK-NEXT: @ %bb.1: @ %return |
| ; CHECK-NEXT: pop {r4, pc} |
| ; CHECK-NEXT: .LBB0_2: @ %if.end |
| ; CHECK-NEXT: bl fn |
| ; CHECK-NEXT: adds r0, #1 |
| ; CHECK-NEXT: pop {r4, pc} |
| entry: |
| %call = tail call i32 @fn(i32 %a) #2 |
| %tobool = icmp eq i32 %a, 0 |
| br i1 %tobool, label %if.end, label %return |
| |
| if.end: ; preds = %entry |
| %call1 = tail call i32 @fn(i32 0) #2 |
| %add = add nsw i32 %call1, 1 |
| br label %return |
| |
| return: ; preds = %entry, %if.end |
| %retval.0 = phi i32 [ %add, %if.end ], [ 0, %entry ] |
| ret i32 %retval.0 |
| } |
| |
| define i32 @f2(i32 %a) #0 { |
| ; CHECK-LABEL: f2: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: .save {r4, lr} |
| ; CHECK-NEXT: push {r4, lr} |
| ; CHECK-NEXT: mov r4, r0 |
| ; CHECK-NEXT: bl fn |
| ; CHECK-NEXT: movs r0, #0 |
| ; CHECK-NEXT: cmp r4, #1 |
| ; CHECK-NEXT: bne .LBB1_2 |
| ; CHECK-NEXT: @ %bb.1: @ %if.end |
| ; CHECK-NEXT: bl fn |
| ; CHECK-NEXT: adds r0, #1 |
| ; CHECK-NEXT: .LBB1_2: @ %return |
| ; CHECK-NEXT: pop {r4, pc} |
| entry: |
| %call = tail call i32 @fn(i32 %a) #2 |
| %tobool = icmp eq i32 %a, 1 |
| br i1 %tobool, label %if.end, label %return |
| |
| if.end: ; preds = %entry |
| %call1 = tail call i32 @fn(i32 0) #2 |
| %add = add nsw i32 %call1, 1 |
| br label %return |
| |
| return: ; preds = %entry, %if.end |
| %retval.0 = phi i32 [ %add, %if.end ], [ 0, %entry ] |
| ret i32 %retval.0 |
| } |
| |
| define void @f3(i32 %x) #0 { |
| ; CHECK-LABEL: f3: |
| ; CHECK: @ %bb.0: @ %entry |
| ; CHECK-NEXT: cmp r0, #1 |
| ; CHECK-NEXT: bne .LBB2_2 |
| ; CHECK-NEXT: @ %bb.1: @ %t |
| ; CHECK-NEXT: .save {r7, lr} |
| ; CHECK-NEXT: push {r7, lr} |
| ; CHECK-NEXT: movs r0, #0 |
| ; CHECK-NEXT: bl fn |
| ; CHECK-NEXT: pop.w {r7, lr} |
| ; CHECK-NEXT: .LBB2_2: @ %f |
| ; CHECK-NEXT: bx lr |
| entry: |
| %p = icmp eq i32 %x, 1 |
| br i1 %p, label %t, label %f |
| |
| t: |
| call i32 @fn(i32 0) |
| br label %f |
| |
| f: |
| ret void |
| } |
| |
| attributes #0 = { minsize nounwind optsize } |
| |