llvm/test/CodeGen/PowerPC/csr-split.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -verify-machineinstrs  -ppc-vsr-nums-as-vr -ppc-asm-full-reg-names \
; RUN:     -mtriple=powerpc64le-unknown-linux-gnu -mcpu=pwr9 < %s | FileCheck %s --check-prefix=CHECK-PWR9
; RUN: llc -verify-machineinstrs  -ppc-vsr-nums-as-vr -ppc-asm-full-reg-names \
; RUN:     -mtriple=powerpc64-unknown-linux-gnu -mcpu=pwr8 < %s | FileCheck %s

; Check CSR split can work properly for tests below.

@a = dso_local local_unnamed_addr global i32 0, align 4

define dso_local signext i32 @test1(i32* %b) local_unnamed_addr  {
; CHECK-PWR9-LABEL: test1:
; CHECK-PWR9:       # %bb.0: # %entry
; CHECK-PWR9-NEXT:    mflr r0
; CHECK-PWR9-NEXT:    .cfi_def_cfa_offset 48
; CHECK-PWR9-NEXT:    .cfi_offset lr, 16
; CHECK-PWR9-NEXT:    .cfi_offset r30, -16
; CHECK-PWR9-NEXT:    std r30, -16(r1) # 8-byte Folded Spill
; CHECK-PWR9-NEXT:    std r0, 16(r1)
; CHECK-PWR9-NEXT:    stdu r1, -48(r1)
; CHECK-PWR9-NEXT:    mr r30, r3
; CHECK-PWR9-NEXT:    addis r3, r2, a@toc@ha
; CHECK-PWR9-NEXT:    lwa r3, a@toc@l(r3)
; CHECK-PWR9-NEXT:    cmpld r3, r30
; CHECK-PWR9-NEXT:    # implicit-def: $r3
; CHECK-PWR9-NEXT:    bne cr0, .LBB0_2
; CHECK-PWR9-NEXT:  # %bb.1: # %if.then
; CHECK-PWR9-NEXT:    bl callVoid
; CHECK-PWR9-NEXT:    nop
; CHECK-PWR9-NEXT:    mr r3, r30
; CHECK-PWR9-NEXT:    bl callNonVoid
; CHECK-PWR9-NEXT:    nop
; CHECK-PWR9-NEXT:  .LBB0_2: # %if.end
; CHECK-PWR9-NEXT:    extsw r3, r3
; CHECK-PWR9-NEXT:    addi r1, r1, 48
; CHECK-PWR9-NEXT:    ld r0, 16(r1)
; CHECK-PWR9-NEXT:    ld r30, -16(r1) # 8-byte Folded Reload
; CHECK-PWR9-NEXT:    mtlr r0
; CHECK-PWR9-NEXT:    blr
;
; CHECK-LABEL: test1:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    mflr r0
; CHECK-NEXT:    std r0, 16(r1)
; CHECK-NEXT:    stdu r1, -128(r1)
; CHECK-NEXT:    .cfi_def_cfa_offset 128
; CHECK-NEXT:    .cfi_offset lr, 16
; CHECK-NEXT:    .cfi_offset r30, -16
; CHECK-NEXT:    addis r4, r2, a@toc@ha
; CHECK-NEXT:    std r30, 112(r1) # 8-byte Folded Spill
; CHECK-NEXT:    mr r30, r3
; CHECK-NEXT:    lwa r4, a@toc@l(r4)
; CHECK-NEXT:    cmpld r4, r3
; CHECK-NEXT:    # implicit-def: $r3
; CHECK-NEXT:    bne cr0, .LBB0_2
; CHECK-NEXT:  # %bb.1: # %if.then
; CHECK-NEXT:    bl callVoid
; CHECK-NEXT:    nop
; CHECK-NEXT:    mr r3, r30
; CHECK-NEXT:    bl callNonVoid
; CHECK-NEXT:    nop
; CHECK-NEXT:  .LBB0_2: # %if.end
; CHECK-NEXT:    ld r30, 112(r1) # 8-byte Folded Reload
; CHECK-NEXT:    extsw r3, r3
; CHECK-NEXT:    addi r1, r1, 128
; CHECK-NEXT:    ld r0, 16(r1)
; CHECK-NEXT:    mtlr r0
; CHECK-NEXT:    blr
entry:
  %0 = load i32, i32* @a, align 4, !tbaa !2
  %conv = sext i32 %0 to i64
  %1 = inttoptr i64 %conv to i32*
  %cmp = icmp eq i32* %1, %b
  br i1 %cmp, label %if.then, label %if.end

if.then:                                          ; preds = %entry
  %call = tail call signext i32 bitcast (i32 (...)* @callVoid to i32 ()*)()
  %call2 = tail call signext i32 @callNonVoid(i32* %b)
  br label %if.end

if.end:                                           ; preds = %if.then, %entry
  %retval.0 = phi i32 [ %call2, %if.then ], [ undef, %entry ]
  ret i32 %retval.0
}

declare signext i32 @callVoid(...) local_unnamed_addr

declare signext i32 @callNonVoid(i32*) local_unnamed_addr

define dso_local signext i32 @test2(i32* %p1) local_unnamed_addr  {
; CHECK-PWR9-LABEL: test2:
; CHECK-PWR9:       # %bb.0: # %entry
; CHECK-PWR9-NEXT:    mflr r0
; CHECK-PWR9-NEXT:    .cfi_def_cfa_offset 48
; CHECK-PWR9-NEXT:    .cfi_offset lr, 16
; CHECK-PWR9-NEXT:    .cfi_offset r30, -16
; CHECK-PWR9-NEXT:    std r30, -16(r1) # 8-byte Folded Spill
; CHECK-PWR9-NEXT:    std r0, 16(r1)
; CHECK-PWR9-NEXT:    stdu r1, -48(r1)
; CHECK-PWR9-NEXT:    mr r30, r3
; CHECK-PWR9-NEXT:    li r3, 0
; CHECK-PWR9-NEXT:    cmpldi r30, 0
; CHECK-PWR9-NEXT:    beq cr0, .LBB1_3
; CHECK-PWR9-NEXT:  # %bb.1: # %if.end
; CHECK-PWR9-NEXT:    addis r4, r2, a@toc@ha
; CHECK-PWR9-NEXT:    lwa r4, a@toc@l(r4)
; CHECK-PWR9-NEXT:    cmpld r4, r30
; CHECK-PWR9-NEXT:    bne cr0, .LBB1_3
; CHECK-PWR9-NEXT:  # %bb.2: # %if.then2
; CHECK-PWR9-NEXT:    bl callVoid
; CHECK-PWR9-NEXT:    nop
; CHECK-PWR9-NEXT:    mr r3, r30
; CHECK-PWR9-NEXT:    bl callNonVoid
; CHECK-PWR9-NEXT:    nop
; CHECK-PWR9-NEXT:  .LBB1_3: # %return
; CHECK-PWR9-NEXT:    extsw r3, r3
; CHECK-PWR9-NEXT:    addi r1, r1, 48
; CHECK-PWR9-NEXT:    ld r0, 16(r1)
; CHECK-PWR9-NEXT:    ld r30, -16(r1) # 8-byte Folded Reload
; CHECK-PWR9-NEXT:    mtlr r0
; CHECK-PWR9-NEXT:    blr
;
; CHECK-LABEL: test2:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    mflr r0
; CHECK-NEXT:    std r0, 16(r1)
; CHECK-NEXT:    stdu r1, -128(r1)
; CHECK-NEXT:    .cfi_def_cfa_offset 128
; CHECK-NEXT:    .cfi_offset lr, 16
; CHECK-NEXT:    .cfi_offset r30, -16
; CHECK-NEXT:    std r30, 112(r1) # 8-byte Folded Spill
; CHECK-NEXT:    mr r30, r3
; CHECK-NEXT:    cmpldi r3, 0
; CHECK-NEXT:    li r3, 0
; CHECK-NEXT:    beq cr0, .LBB1_3
; CHECK-NEXT:  # %bb.1: # %if.end
; CHECK-NEXT:    addis r4, r2, a@toc@ha
; CHECK-NEXT:    lwa r4, a@toc@l(r4)
; CHECK-NEXT:    cmpld r4, r30
; CHECK-NEXT:    bne cr0, .LBB1_3
; CHECK-NEXT:  # %bb.2: # %if.then2
; CHECK-NEXT:    bl callVoid
; CHECK-NEXT:    nop
; CHECK-NEXT:    mr r3, r30
; CHECK-NEXT:    bl callNonVoid
; CHECK-NEXT:    nop
; CHECK-NEXT:  .LBB1_3: # %return
; CHECK-NEXT:    ld r30, 112(r1) # 8-byte Folded Reload
; CHECK-NEXT:    extsw r3, r3
; CHECK-NEXT:    addi r1, r1, 128
; CHECK-NEXT:    ld r0, 16(r1)
; CHECK-NEXT:    mtlr r0
; CHECK-NEXT:    blr
entry:
  %tobool = icmp eq i32* %p1, null
  br i1 %tobool, label %return, label %if.end

if.end:                                           ; preds = %entry
  %0 = load i32, i32* @a, align 4, !tbaa !2
  %conv = sext i32 %0 to i64
  %1 = inttoptr i64 %conv to i32*
  %cmp = icmp eq i32* %1, %p1
  br i1 %cmp, label %if.then2, label %return

if.then2:                                         ; preds = %if.end
  %call = tail call signext i32 bitcast (i32 (...)* @callVoid to i32 ()*)()
  %call3 = tail call signext i32 @callNonVoid(i32* nonnull %p1)
  br label %return

return:                                           ; preds = %if.end, %entry, %if.then2
  %retval.0 = phi i32 [ %call3, %if.then2 ], [ 0, %entry ], [ 0, %if.end ]
  ret i32 %retval.0
}


define dso_local i8* @test3(i8** nocapture %p1, i8 zeroext %p2) local_unnamed_addr  {
; CHECK-PWR9-LABEL: test3:
; CHECK-PWR9:       # %bb.0: # %entry
; CHECK-PWR9-NEXT:    mflr r0
; CHECK-PWR9-NEXT:    .cfi_def_cfa_offset 64
; CHECK-PWR9-NEXT:    .cfi_offset lr, 16
; CHECK-PWR9-NEXT:    .cfi_offset r29, -24
; CHECK-PWR9-NEXT:    .cfi_offset r30, -16
; CHECK-PWR9-NEXT:    std r29, -24(r1) # 8-byte Folded Spill
; CHECK-PWR9-NEXT:    std r30, -16(r1) # 8-byte Folded Spill
; CHECK-PWR9-NEXT:    std r0, 16(r1)
; CHECK-PWR9-NEXT:    stdu r1, -64(r1)
; CHECK-PWR9-NEXT:    ld r30, 0(r3)
; CHECK-PWR9-NEXT:    cmpldi r30, 0
; CHECK-PWR9-NEXT:    beq cr0, .LBB2_2
; CHECK-PWR9-NEXT:  # %bb.1: # %land.rhs
; CHECK-PWR9-NEXT:    mr r29, r3
; CHECK-PWR9-NEXT:    clrldi r4, r4, 32
; CHECK-PWR9-NEXT:    mr r3, r30
; CHECK-PWR9-NEXT:    bl bar
; CHECK-PWR9-NEXT:    nop
; CHECK-PWR9-NEXT:    std r3, 0(r29)
; CHECK-PWR9-NEXT:  .LBB2_2: # %land.end
; CHECK-PWR9-NEXT:    mr r3, r30
; CHECK-PWR9-NEXT:    addi r1, r1, 64
; CHECK-PWR9-NEXT:    ld r0, 16(r1)
; CHECK-PWR9-NEXT:    ld r30, -16(r1) # 8-byte Folded Reload
; CHECK-PWR9-NEXT:    ld r29, -24(r1) # 8-byte Folded Reload
; CHECK-PWR9-NEXT:    mtlr r0
; CHECK-PWR9-NEXT:    blr
;
; CHECK-LABEL: test3:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    mflr r0
; CHECK-NEXT:    std r0, 16(r1)
; CHECK-NEXT:    stdu r1, -144(r1)
; CHECK-NEXT:    .cfi_def_cfa_offset 144
; CHECK-NEXT:    .cfi_offset lr, 16
; CHECK-NEXT:    .cfi_offset r29, -24
; CHECK-NEXT:    .cfi_offset r30, -16
; CHECK-NEXT:    std r30, 128(r1) # 8-byte Folded Spill
; CHECK-NEXT:    ld r30, 0(r3)
; CHECK-NEXT:    std r29, 120(r1) # 8-byte Folded Spill
; CHECK-NEXT:    cmpldi r30, 0
; CHECK-NEXT:    beq cr0, .LBB2_2
; CHECK-NEXT:  # %bb.1: # %land.rhs
; CHECK-NEXT:    mr r29, r3
; CHECK-NEXT:    clrldi r4, r4, 32
; CHECK-NEXT:    mr r3, r30
; CHECK-NEXT:    bl bar
; CHECK-NEXT:    nop
; CHECK-NEXT:    std r3, 0(r29)
; CHECK-NEXT:  .LBB2_2: # %land.end
; CHECK-NEXT:    mr r3, r30
; CHECK-NEXT:    ld r30, 128(r1) # 8-byte Folded Reload
; CHECK-NEXT:    ld r29, 120(r1) # 8-byte Folded Reload
; CHECK-NEXT:    addi r1, r1, 144
; CHECK-NEXT:    ld r0, 16(r1)
; CHECK-NEXT:    mtlr r0
; CHECK-NEXT:    blr
entry:
  %0 = load i8*, i8** %p1, align 8, !tbaa !6
  %tobool = icmp eq i8* %0, null
  br i1 %tobool, label %land.end, label %land.rhs

land.rhs:                                         ; preds = %entry
  %call = tail call i8* @bar(i8* nonnull %0, i8 zeroext %p2)
  store i8* %call, i8** %p1, align 8, !tbaa !6
  br label %land.end

land.end:                                         ; preds = %entry, %land.rhs
  ret i8* %0
}

declare i8* @bar(i8*, i8 zeroext) local_unnamed_addr


!llvm.module.flags = !{!0}
!llvm.ident = !{!1}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{!"clang version 10.0.0 (trunk 367381) (llvm/trunk 367388)"}
!2 = !{!3, !3, i64 0}
!3 = !{!"int", !4, i64 0}
!4 = !{!"omnipotent char", !5, i64 0}
!5 = !{!"Simple C/C++ TBAA"}
!6 = !{!7, !7, i64 0}
!7 = !{!"any pointer", !4, i64 0}