llvm/test/CodeGen/X86/apx/cf.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64 -mattr=+cf,+nf,+avx512f -verify-machineinstrs | FileCheck %s

define void @basic(i32 %a, ptr %b, ptr %p, ptr %q) {
; CHECK-LABEL: basic:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    testl %edi, %edi
; CHECK-NEXT:    cfcmovel (%rsi), %eax
; CHECK-NEXT:    cfcmovel %eax, (%rdx)
; CHECK-NEXT:    movl $1, %eax
; CHECK-NEXT:    cfcmovneq %rax, (%rdx)
; CHECK-NEXT:    movw $2, %ax
; CHECK-NEXT:    cfcmovnew %ax, (%rcx)
; CHECK-NEXT:    retq
entry:
  %cond = icmp eq i32 %a, 0
  %0 = bitcast i1 %cond to <1 x i1>
  %1 = call <1 x i32> @llvm.masked.load.v1i32.p0(ptr %b, i32 4, <1 x i1> %0, <1 x i32> poison)
  call void @llvm.masked.store.v1i32.p0(<1 x i32> %1, ptr %p, i32 4, <1 x i1> %0)
  %2 = xor i1 %cond, true
  %3 = bitcast i1 %2 to <1 x i1>
  call void @llvm.masked.store.v1i64.p0(<1 x i64> <i64 1>, ptr %p, i32 8, <1 x i1> %3)
  call void @llvm.masked.store.v1i16.p0(<1 x i16> <i16 2>, ptr %q, i32 8, <1 x i1> %3)
  ret void
}

define i16 @cload_passthru_zero(i16 %a, ptr %b) {
; CHECK-LABEL: cload_passthru_zero:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    testw %di, %di
; CHECK-NEXT:    cfcmovew (%rsi), %ax
; CHECK-NEXT:    retq
entry:
  %cond = icmp eq i16 %a, 0
  %0 = bitcast i1 %cond to <1 x i1>
  %1 = call <1 x i16> @llvm.masked.load.v1i16.p0(ptr %b, i32 4, <1 x i1> %0, <1 x i16> <i16 0>)
  %2 = bitcast <1 x i16> %1 to i16
  ret i16 %2
}

define i64 @cload_passthru_not_zero(i64 %a, ptr %b) {
; CHECK-LABEL: cload_passthru_not_zero:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    testq %rdi, %rdi
; CHECK-NEXT:    cfcmoveq (%rsi), %rdi, %rax
; CHECK-NEXT:    retq
entry:
  %cond = icmp eq i64 %a, 0
  %0 = bitcast i1 %cond to <1 x i1>
  %va = bitcast i64 %a to <1 x i64>
  %1 = call <1 x i64> @llvm.masked.load.v1i64.p0(ptr %b, i32 4, <1 x i1> %0, <1 x i64> %va)
  %2 = bitcast <1 x i64> %1 to i64
  ret i64 %2
}

;; CFCMOV can use the flags produced by SUB directly.
define i64 @reduced_data_dependency(i64 %a, i64 %b, ptr %c) {
; CHECK-LABEL: reduced_data_dependency:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    movq %rdi, %rcx
; CHECK-NEXT:    subq %rsi, %rcx
; CHECK-NEXT:    cfcmovnsq (%rdx), %rdi, %rax
; CHECK-NEXT:    addq %rcx, %rax
; CHECK-NEXT:    retq
entry:
  %sub = sub i64 %a, %b
  %cond = icmp sge i64 %sub, 0
  %0 = bitcast i1 %cond to <1 x i1>
  %va = bitcast i64 %a to <1 x i64>
  %1 = call <1 x i64> @llvm.masked.load.v1i64.p0(ptr %c, i32 4, <1 x i1> %0, <1 x i64> %va)
  %2 = bitcast <1 x i64> %1 to i64
  %3 = add i64 %2, %sub
  ret i64 %3
}

;; No need to optimize the generated assembly for cond_false/cond_true b/c it
;; should never be emitted by middle end. Add IR here just to check it's
;; legal to feed constant mask to backend.
define i16 @cond_false(ptr %b) {
; CHECK-LABEL: cond_false:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    xorl %eax, %eax
; CHECK-NEXT:    negb %al
; CHECK-NEXT:    cfcmovnew (%rdi), %ax
; CHECK-NEXT:    retq
entry:
  %0 = bitcast i1 false to <1 x i1>
  %1 = call <1 x i16> @llvm.masked.load.v1i16.p0(ptr %b, i32 4, <1 x i1> %0, <1 x i16> <i16 0>)
  %2 = bitcast <1 x i16> %1 to i16
  ret i16 %2
}

define i64 @cond_true(ptr %b) {
; CHECK-LABEL: cond_true:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    movb $1, %al
; CHECK-NEXT:    negb %al
; CHECK-NEXT:    cfcmovneq (%rdi), %rax
; CHECK-NEXT:    retq
entry:
  %0 = bitcast i1 true to <1 x i1>
  %1 = call <1 x i64> @llvm.masked.load.v1i64.p0(ptr %b, i32 4, <1 x i1> %0, <1 x i64> <i64 0>)
  %2 = bitcast <1 x i64> %1 to i64
  ret i64 %2
}

define void @no_crash(ptr %p, <4 x i1> %cond1, <4 x i1> %cond2) {
; CHECK-LABEL: no_crash:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    vpslld $31, %xmm1, %xmm1
; CHECK-NEXT:    vptestmd %zmm1, %zmm1, %k0
; CHECK-NEXT:    kshiftlw $12, %k0, %k0
; CHECK-NEXT:    kshiftrw $12, %k0, %k1
; CHECK-NEXT:    vpslld $31, %xmm0, %xmm0
; CHECK-NEXT:    vptestmd %zmm0, %zmm0, %k0
; CHECK-NEXT:    kshiftlw $12, %k0, %k0
; CHECK-NEXT:    kshiftrw $12, %k0, %k2
; CHECK-NEXT:    vmovdqu64 (%rdi), %zmm0 {%k2} {z}
; CHECK-NEXT:    vmovdqu64 %zmm0, (%rdi) {%k1}
; CHECK-NEXT:    vzeroupper
; CHECK-NEXT:    retq
entry:
  %0 = call <4 x i64> @llvm.masked.load.v4i64.p0(ptr %p, i32 8, <4 x i1> %cond1, <4 x i64> poison)
  call void @llvm.masked.store.v4i64.p0(<4 x i64> %0, ptr %p, i32 8, <4 x i1> %cond2)
  ret void
}

define void @single_cmp(i32 %a, i32 %b, ptr %c, ptr %d) {
; CHECK-LABEL: single_cmp:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    cmpl %esi, %edi
; CHECK-NEXT:    cfcmovnew (%rdx), %ax
; CHECK-NEXT:    cfcmovnew %ax, (%rcx)
; CHECK-NEXT:    retq
entry:
  %0 = icmp ne i32 %a, %b
  %1 = insertelement <1 x i1> poison, i1 %0, i64 0
  %2 = tail call <1 x i16> @llvm.masked.load.v1i16.p0(ptr %c, i32 2, <1 x i1> %1, <1 x i16> poison)
  tail call void @llvm.masked.store.v1i16.p0(<1 x i16> %2, ptr %d, i32 2, <1 x i1> %1)
  ret void
}

define void @load_add_store(i32 %a, i32 %b, ptr %p) {
; CHECK-LABEL: load_add_store:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    cmpl %esi, %edi
; CHECK-NEXT:    cfcmovnew (%rdx), %ax
; CHECK-NEXT:    {nf} incl %eax
; CHECK-NEXT:    cfcmovnew %ax, (%rdx)
; CHECK-NEXT:    retq
entry:
  %0 = icmp ne i32 %a, %b
  %1 = insertelement <1 x i1> poison, i1 %0, i64 0
  %2 = tail call <1 x i16> @llvm.masked.load.v1i16.p0(ptr %p, i32 2, <1 x i1> %1, <1 x i16> poison)
  %3 = extractelement <1 x i16> %2, i64 0
  %4 = add i16 %3, 1
  %5 = insertelement <1 x i16> poison, i16 %4, i64 0
  tail call void @llvm.masked.store.v1i16.p0(<1 x i16> %5, ptr %p, i32 2, <1 x i1> %1)
  ret void
}

define void @load_zext(i1 %cond, ptr %b, ptr %p) {
; CHECK-LABEL: load_zext:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    testb $1, %dil
; CHECK-NEXT:    cfcmovnew (%rsi), %ax
; CHECK-NEXT:    movzwl %ax, %eax
; CHECK-NEXT:    cfcmovnel %eax, (%rdx)
; CHECK-NEXT:    retq
entry:
  %0 = bitcast i1 %cond to <1 x i1>
  %1 = call <1 x i16> @llvm.masked.load.v1i16.p0(ptr %b, i32 2, <1 x i1> %0, <1 x i16> poison)
  %2 = bitcast <1 x i16> %1 to i16
  %zext = zext i16 %2 to i32
  %3 = bitcast i32 %zext to <1 x i32>
  call void @llvm.masked.store.v1i32.p0(<1 x i32> %3, ptr %p, i32 4, <1 x i1> %0)
  ret void
}

define void @load_sext(i1 %cond, ptr %b, ptr %p) {
; CHECK-LABEL: load_sext:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    testb $1, %dil
; CHECK-NEXT:    cfcmovnel (%rsi), %eax
; CHECK-NEXT:    cltq
; CHECK-NEXT:    cfcmovneq %rax, (%rdx)
; CHECK-NEXT:    retq
entry:
  %0 = bitcast i1 %cond to <1 x i1>
  %1 = call <1 x i32> @llvm.masked.load.v1i32.p0(ptr %b, i32 2, <1 x i1> %0, <1 x i32> poison)
  %2 = bitcast <1 x i32> %1 to i32
  %zext = sext i32 %2 to i64
  %3 = bitcast i64 %zext to <1 x i64>
  call void @llvm.masked.store.v1i64.p0(<1 x i64> %3, ptr %p, i32 4, <1 x i1> %0)
  ret void
}

define void @sink_gep(ptr %p, i1 %cond) {
; CHECK-LABEL: sink_gep:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    xorl %eax, %eax
; CHECK-NEXT:    testb $1, %sil
; CHECK-NEXT:    cfcmovnel %eax, 112(%rdi)
; CHECK-NEXT:    cfcmovnel 112(%rdi), %eax
; CHECK-NEXT:    movl %eax, (%rdi)
; CHECK-NEXT:    retq
entry:
  %0 = getelementptr i8, ptr %p, i64 112
  br label %next

next:
  %1 = bitcast i1 %cond to <1 x i1>
  call void @llvm.masked.store.v1i32.p0(<1 x i32> zeroinitializer, ptr %0, i32 1, <1 x i1> %1)
  %2 = call <1 x i32> @llvm.masked.load.v1i32.p0(ptr %0, i32 1, <1 x i1> %1, <1 x i32> zeroinitializer)
  store <1 x i32> %2, ptr %p, align 4
  ret void
}

define void @xor_cond(ptr %p, i1 %cond) {
; CHECK-LABEL: xor_cond:
; CHECK:       # %bb.0: # %entry
; CHECK-NEXT:    xorl %eax, %eax
; CHECK-NEXT:    testb $1, %sil
; CHECK-NEXT:    cfcmovel %eax, (%rdi)
; CHECK-NEXT:    retq
entry:
  %0 = xor i1 %cond, true
  %1 = insertelement <1 x i1> zeroinitializer, i1 %0, i64 0
  call void @llvm.masked.store.v1i32.p0(<1 x i32> zeroinitializer, ptr %p, i32 1, <1 x i1> %1)
  ret void
}

define i64 @redundant_test(i64 %num, ptr %p1, i64 %in) {
; CHECK-LABEL: redundant_test:
; CHECK:       # %bb.0:
; CHECK-NEXT:    testl $-32, %edi
; CHECK-NEXT:    cfcmoveq (%rsi), %rax
; CHECK-NEXT:    {nf} addq %rdx, %rax
; CHECK-NEXT:    cmovneq %rdi, %rax
; CHECK-NEXT:    retq
  %and = and i64 %num, 4294967264
  %cmp = icmp eq i64 %and, 0
  %mask = bitcast i1 %cmp to <1 x i1>
  %condload = tail call <1 x i64> @llvm.masked.load.v1i64.p0(ptr %p1, i32 8, <1 x i1> %mask, <1 x i64> poison)
  %v = bitcast <1 x i64> %condload to i64
  %add = add i64 %v, %in
  %sel = select i1 %cmp, i64 %add, i64 %num
  ret i64 %sel
}