llvm/test/CodeGen/X86/float-conv-elim.ll

; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=x86_64-- -mcpu=x86-64 < %s | FileCheck %s

define i32 @u8_f32_s32(i8 %a) {
; CHECK-LABEL: u8_f32_s32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movzbl %dil, %eax
; CHECK-NEXT:    retq
  %conv = uitofp i8 %a to float
  %conv1 = fptosi float %conv to i32
  ret i32 %conv1
}

define i32 @s8_f32_s32(i8 %a) {
; CHECK-LABEL: s8_f32_s32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movsbl %dil, %eax
; CHECK-NEXT:    retq
  %conv = sitofp i8 %a to float
  %conv1 = fptosi float %conv to i32
  ret i32 %conv1
}

define zeroext i8 @u8_f32_u8(i8 zeroext %a) {
; CHECK-LABEL: u8_f32_u8:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    # kill: def $al killed $al killed $eax
; CHECK-NEXT:    retq
  %conv = uitofp i8 %a to float
  %conv1 = fptoui float %conv to i8
  ret i8 %conv1
}

define i32 @s32_f32_s24_s32(i32 %a) {
; CHECK-LABEL: s32_f32_s24_s32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    shll $8, %eax
; CHECK-NEXT:    sarl $8, %eax
; CHECK-NEXT:    retq
  %f = sitofp i32 %a to float
  %i = fptosi float %f to i24
  %r = sext i24 %i to i32
  ret i32 %r
}

define i32 @s32_f32_u24_u32(i32 %a) {
; CHECK-LABEL: s32_f32_u24_u32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    andl $16777215, %eax # imm = 0xFFFFFF
; CHECK-NEXT:    retq
  %f = sitofp i32 %a to float
  %i = fptoui float %f to i24
  %r = zext i24 %i to i32
  ret i32 %r
}

define i32 @u32_f32_s24_s32(i32 %a) {
; CHECK-LABEL: u32_f32_s24_s32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    shll $8, %eax
; CHECK-NEXT:    sarl $8, %eax
; CHECK-NEXT:    retq
  %f = uitofp i32 %a to float
  %i = fptosi float %f to i24
  %r = sext i24 %i to i32
  ret i32 %r
}

define i32 @u32_f32_u24_u32(i32 %a) {
; CHECK-LABEL: u32_f32_u24_u32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    andl $16777215, %eax # imm = 0xFFFFFF
; CHECK-NEXT:    retq
  %f = uitofp i32 %a to float
  %i = fptoui float %f to i24
  %r = zext i24 %i to i32
  ret i32 %r
}

; This requires converting to FP and back.

define i32 @s32_f32_s25_s32(i32 %a) {
; CHECK-LABEL: s32_f32_s25_s32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    cvtsi2ss %edi, %xmm0
; CHECK-NEXT:    cvttss2si %xmm0, %eax
; CHECK-NEXT:    retq
  %f = sitofp i32 %a to float
  %i = fptosi float %f to i25
  %r = sext i25 %i to i32
  ret i32 %r
}

define i32 @s32_f32_u25_u32(i32 %a) {
; CHECK-LABEL: s32_f32_u25_u32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    cvtsi2ss %edi, %xmm0
; CHECK-NEXT:    cvttss2si %xmm0, %eax
; CHECK-NEXT:    retq
  %f = sitofp i32 %a to float
  %i = fptoui float %f to i25
  %r = zext i25 %i to i32
  ret i32 %r
}

; TODO: This could avoid converting to FP.

define i32 @u32_f32_s25_s32(i32 %a) {
; CHECK-LABEL: u32_f32_s25_s32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    cvtsi2ss %rax, %xmm0
; CHECK-NEXT:    cvttss2si %xmm0, %eax
; CHECK-NEXT:    retq
  %f = uitofp i32 %a to float
  %i = fptosi float %f to i25
  %r = sext i25 %i to i32
  ret i32 %r
}

define i32 @u32_f32_u25_u32(i32 %a) {
; CHECK-LABEL: u32_f32_u25_u32:
; CHECK:       # %bb.0:
; CHECK-NEXT:    movl %edi, %eax
; CHECK-NEXT:    cvtsi2ss %rax, %xmm0
; CHECK-NEXT:    cvttss2si %xmm0, %eax
; CHECK-NEXT:    retq
  %f = uitofp i32 %a to float
  %i = fptoui float %f to i25
  %r = zext i25 %i to i32
  ret i32 %r
}