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llvm-mirror/test/CodeGen/PowerPC/pr48519.ll
Roman Lebedev 19cfa09971 Reland [SCEV] Improve modelling for (null) pointer constants
This reverts commit 329aeb5db43f5e69df038fb20d2def77fe6f8595,
and relands commit 61f006ac655431bd44b9e089f74c73bec0c1a48c.

This is a continuation of D89456.

As it was suggested there, now that SCEV models `PtrToInt`,
we can try to improve SCEV's pointer handling.
In particular, i believe, i will need this in the future
to further fix `SCEVAddExpr`operation type handling.

This removes special handling of `ConstantPointerNull`
from `ScalarEvolution::createSCEV()`, and add constant folding
into `ScalarEvolution::getPtrToIntExpr()`.
This way, `null` constants stay as such in SCEV's,
but gracefully become zero integers when asked.

Reviewed By: Meinersbur

Differential Revision: https://reviews.llvm.org/D98147
2021-03-13 16:05:34 +03:00

311 lines
9.5 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mcpu=pwr8 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr \
; RUN: -mtriple=powerpc64le-unknown-unknown < %s | FileCheck %s
; RUN: llc -mcpu=pwr9 -ppc-asm-full-reg-names -ppc-vsr-nums-as-vr \
; RUN: -mtriple=powerpc64le-unknown-unknown < %s | FileCheck %s \
; RUN: -check-prefix=CHECK-P9
define void @julia__typed_vcat_20() #0 {
; CHECK-LABEL: julia__typed_vcat_20:
; CHECK: # %bb.0: # %bb
; CHECK-NEXT: mflr r0
; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
; CHECK-NEXT: std r0, 16(r1)
; CHECK-NEXT: stdu r1, -48(r1)
; CHECK-NEXT: li r3, 1
; CHECK-NEXT: li r30, 0
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: .LBB0_1: # %bb3
; CHECK-NEXT: #
; CHECK-NEXT: addi r3, r3, -1
; CHECK-NEXT: mtfprd f0, r3
; CHECK-NEXT: xscvsxdsp f1, f0
; CHECK-NEXT: bl __gnu_f2h_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: clrldi r3, r3, 48
; CHECK-NEXT: bl __gnu_h2f_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: addi r30, r30, -1
; CHECK-NEXT: li r3, 0
; CHECK-NEXT: cmpldi r30, 0
; CHECK-NEXT: bne+ cr0, .LBB0_1
; CHECK-NEXT: # %bb.2: # %bb11
; CHECK-NEXT: bl __gnu_f2h_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: sth r3, 0(r3)
;
; CHECK-P9-LABEL: julia__typed_vcat_20:
; CHECK-P9: # %bb.0: # %bb
; CHECK-P9-NEXT: li r3, 0
; CHECK-P9-NEXT: mtctr r3
; CHECK-P9-NEXT: li r3, 1
; CHECK-P9-NEXT: .p2align 4
; CHECK-P9-NEXT: .LBB0_1: # %bb3
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: addi r3, r3, -1
; CHECK-P9-NEXT: mtfprd f0, r3
; CHECK-P9-NEXT: xscvsxdsp f0, f0
; CHECK-P9-NEXT: xscvdphp f0, f0
; CHECK-P9-NEXT: mffprwz r3, f0
; CHECK-P9-NEXT: clrlwi r3, r3, 16
; CHECK-P9-NEXT: mtfprwz f0, r3
; CHECK-P9-NEXT: li r3, 0
; CHECK-P9-NEXT: xscvhpdp f0, f0
; CHECK-P9-NEXT: bdnz .LBB0_1
; CHECK-P9-NEXT: # %bb.2: # %bb11
; CHECK-P9-NEXT: xscvdphp f0, f0
; CHECK-P9-NEXT: stxsihx f0, 0, r3
bb:
%i = load i64, i64 addrspace(11)* null, align 8
%i1 = call { i64, i1 } @llvm.ssub.with.overflow.i64(i64 %i, i64 0)
%i2 = extractvalue { i64, i1 } %i1, 0
br label %bb3
bb3: ; preds = %bb3, %bb
%i4 = phi i64 [ %i10, %bb3 ], [ 1, %bb ]
%i5 = phi i64 [ 0, %bb3 ], [ 1, %bb ]
%i6 = add nsw i64 %i5, -1
%i7 = add i64 %i6, 0
%i8 = sitofp i64 %i7 to half
store half %i8, half addrspace(13)* undef, align 2
%i9 = icmp eq i64 %i4, 0
%i10 = add i64 %i4, 1
br i1 %i9, label %bb11, label %bb3
bb11: ; preds = %bb3
unreachable
}
declare { i64, i1 } @llvm.ssub.with.overflow.i64(i64, i64) #0
define void @julia__hypot_17() #0 {
; CHECK-LABEL: julia__hypot_17:
; CHECK: # %bb.0: # %bb
; CHECK-NEXT: mflr r0
; CHECK-NEXT: std r30, -16(r1) # 8-byte Folded Spill
; CHECK-NEXT: std r0, 16(r1)
; CHECK-NEXT: stdu r1, -48(r1)
; CHECK-NEXT: li r30, 3
; CHECK-NEXT: .p2align 5
; CHECK-NEXT: .LBB1_1: # %bb1
; CHECK-NEXT: #
; CHECK-NEXT: addi r30, r30, -1
; CHECK-NEXT: cmpldi r30, 0
; CHECK-NEXT: beq cr0, .LBB1_3
; CHECK-NEXT: # %bb.2: # %bb3
; CHECK-NEXT: #
; CHECK-NEXT: lhz r3, 0(0)
; CHECK-NEXT: bl __gnu_h2f_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: fcmpu cr0, f1, f1
; CHECK-NEXT: bun cr0, .LBB1_1
; CHECK-NEXT: .LBB1_3: # %bb9
; CHECK-NEXT: addi r1, r1, 48
; CHECK-NEXT: ld r0, 16(r1)
; CHECK-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
; CHECK-NEXT: mtlr r0
; CHECK-NEXT: blr
;
; CHECK-P9-LABEL: julia__hypot_17:
; CHECK-P9: # %bb.0: # %bb
; CHECK-P9-NEXT: li r3, 3
; CHECK-P9-NEXT: mtctr r3
; CHECK-P9-NEXT: li r3, 0
; CHECK-P9-NEXT: .p2align 5
; CHECK-P9-NEXT: .LBB1_1: # %bb1
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: bdzlr
; CHECK-P9-NEXT: # %bb.2: # %bb3
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: lxsihzx f0, 0, r3
; CHECK-P9-NEXT: xscvhpdp f0, f0
; CHECK-P9-NEXT: fcmpu cr0, f0, f0
; CHECK-P9-NEXT: bun cr0, .LBB1_1
; CHECK-P9-NEXT: # %bb.3: # %bb9
; CHECK-P9-NEXT: blr
bb:
br label %bb1
bb1: ; preds = %bb3, %bb
%i = phi i64 [ %i4, %bb3 ], [ 2, %bb ]
%i2 = icmp eq i64 %i, 4
br i1 %i2, label %bb9, label %bb3
bb3: ; preds = %bb1
%i4 = add nuw nsw i64 %i, 1
%i5 = load half, half* null, align 2
%i6 = fpext half %i5 to float
%i7 = fcmp uno float %i6, 0.000000e+00
%i8 = or i1 %i7, false
br i1 %i8, label %bb1, label %bb9
bb9: ; preds = %bb3, %bb1
ret void
}
define void @func_48786() #0 {
; CHECK-LABEL: func_48786:
; CHECK: # %bb.0: # %bb
; CHECK-NEXT: mfocrf r12, 32
; CHECK-NEXT: mflr r0
; CHECK-NEXT: std r0, 16(r1)
; CHECK-NEXT: stw r12, 8(r1)
; CHECK-NEXT: stdu r1, -48(r1)
; CHECK-NEXT: ld r3, 0(r3)
; CHECK-NEXT: std r30, 32(r1) # 8-byte Folded Spill
; CHECK-NEXT: # implicit-def: $x30
; CHECK-NEXT: cmpdi r3, 0
; CHECK-NEXT: crnot 4*cr2+lt, eq
; CHECK-NEXT: bc 12, 4*cr5+lt, .LBB2_3
; CHECK-NEXT: .p2align 4
; CHECK-NEXT: .LBB2_1: # %bb4
; CHECK-NEXT: lhz r3, 0(r3)
; CHECK-NEXT: bl __gnu_h2f_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: bc 4, 4*cr2+lt, .LBB2_6
; CHECK-NEXT: # %bb.2: # %bb8
; CHECK-NEXT: bl __gnu_f2h_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: sth r3, 0(0)
; CHECK-NEXT: .LBB2_3: # %bb10
; CHECK-NEXT: #
; CHECK-NEXT: cmpldi r30, 0
; CHECK-NEXT: beq cr0, .LBB2_5
; CHECK-NEXT: # %bb.4: # %bb12
; CHECK-NEXT: #
; CHECK-NEXT: addi r30, r30, 1
; CHECK-NEXT: bc 4, 4*cr5+lt, .LBB2_1
; CHECK-NEXT: b .LBB2_3
; CHECK-NEXT: .LBB2_5: # %bb14
; CHECK-NEXT: ld r30, 32(r1) # 8-byte Folded Reload
; CHECK-NEXT: addi r1, r1, 48
; CHECK-NEXT: ld r0, 16(r1)
; CHECK-NEXT: lwz r12, 8(r1)
; CHECK-NEXT: mtocrf 32, r12
; CHECK-NEXT: mtlr r0
; CHECK-NEXT: blr
; CHECK-NEXT: .LBB2_6: # %bb15
;
; CHECK-P9-LABEL: func_48786:
; CHECK-P9: # %bb.0: # %bb
; CHECK-P9-NEXT: ld r3, 0(r3)
; CHECK-P9-NEXT: cmpdi r3, 0
; CHECK-P9-NEXT: mtctr r3
; CHECK-P9-NEXT: li r3, 0
; CHECK-P9-NEXT: crnot 4*cr5+lt, eq
; CHECK-P9-NEXT: b .LBB2_2
; CHECK-P9-NEXT: .p2align 5
; CHECK-P9-NEXT: .LBB2_1: # %bb10
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: bdzlr
; CHECK-P9-NEXT: .LBB2_2: # %bb2
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: bc 12, 4*cr5+lt, .LBB2_1
; CHECK-P9-NEXT: # %bb.3: # %bb4
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: lxsihzx f0, 0, r3
; CHECK-P9-NEXT: xscvhpdp f0, f0
; CHECK-P9-NEXT: bc 4, 4*cr5+lt, .LBB2_5
; CHECK-P9-NEXT: # %bb.4: # %bb8
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: xscvdphp f0, f0
; CHECK-P9-NEXT: stxsihx f0, 0, r3
; CHECK-P9-NEXT: b .LBB2_1
; CHECK-P9-NEXT: .LBB2_5: # %bb15
bb:
%i = load i64, i64 addrspace(11)* undef, align 8
%i1 = load i64, i64 addrspace(11)* undef, align 8
br label %bb2
bb2: ; preds = %bb12, %bb
%i3 = phi i64 [ undef, %bb ], [ %i13, %bb12 ]
br i1 undef, label %bb10, label %bb4
bb4: ; preds = %bb2
switch i32 undef, label %bb9 [
i32 1426063360, label %bb5
i32 1275068416, label %bb5
]
bb5: ; preds = %bb4, %bb4
%i6 = load half, half addrspace(13)* undef, align 2
%i7 = icmp ult i64 0, %i1
br i1 %i7, label %bb8, label %bb15
bb8: ; preds = %bb5
store half %i6, half addrspace(13)* null, align 2
br label %bb10
bb9: ; preds = %bb4
unreachable
bb10: ; preds = %bb8, %bb2
%i11 = icmp eq i64 %i3, 0
br i1 %i11, label %bb14, label %bb12
bb12: ; preds = %bb10
%i13 = add i64 %i3, 1
br label %bb2
bb14: ; preds = %bb10
ret void
bb15: ; preds = %bb5
unreachable
}
define void @func_48785(half %arg) #0 {
; CHECK-LABEL: func_48785:
; CHECK: # %bb.0: # %bb
; CHECK-NEXT: mflr r0
; CHECK-NEXT: std r29, -32(r1) # 8-byte Folded Spill
; CHECK-NEXT: std r30, -24(r1) # 8-byte Folded Spill
; CHECK-NEXT: stfd f31, -8(r1) # 8-byte Folded Spill
; CHECK-NEXT: std r0, 16(r1)
; CHECK-NEXT: stdu r1, -64(r1)
; CHECK-NEXT: fmr f31, f1
; CHECK-NEXT: li r30, 0
; CHECK-NEXT: li r29, 0
; CHECK-NEXT: .p2align 5
; CHECK-NEXT: .LBB3_1: # %bb1
; CHECK-NEXT: #
; CHECK-NEXT: fmr f1, f31
; CHECK-NEXT: bl __gnu_f2h_ieee
; CHECK-NEXT: nop
; CHECK-NEXT: addi r29, r29, -12
; CHECK-NEXT: sth r3, 0(r30)
; CHECK-NEXT: addi r30, r30, 24
; CHECK-NEXT: cmpldi r29, 0
; CHECK-NEXT: bne+ cr0, .LBB3_1
; CHECK-NEXT: # %bb.2: # %bb5
;
; CHECK-P9-LABEL: func_48785:
; CHECK-P9: # %bb.0: # %bb
; CHECK-P9-NEXT: li r3, 1
; CHECK-P9-NEXT: rldic r3, r3, 62, 1
; CHECK-P9-NEXT: mtctr r3
; CHECK-P9-NEXT: li r3, 0
; CHECK-P9-NEXT: .p2align 4
; CHECK-P9-NEXT: .LBB3_1: # %bb1
; CHECK-P9-NEXT: #
; CHECK-P9-NEXT: xscvdphp f0, f1
; CHECK-P9-NEXT: stxsihx f0, 0, r3
; CHECK-P9-NEXT: addi r3, r3, 24
; CHECK-P9-NEXT: bdnz .LBB3_1
; CHECK-P9-NEXT: # %bb.2: # %bb5
bb:
br label %bb1
bb1: ; preds = %bb1, %bb
%i = phi i64 [ 0, %bb ], [ %i3, %bb1 ]
%i2 = getelementptr inbounds half, half addrspace(13)* null, i64 %i
store half %arg, half addrspace(13)* %i2, align 2
%i3 = add i64 %i, 12
%i4 = icmp eq i64 %i3, 0
br i1 %i4, label %bb5, label %bb1
bb5: ; preds = %bb1
unreachable
}
attributes #0 = { nounwind }