llvm/test/CodeGen/WebAssembly/signext-zeroext.ll

; RUN: llc < %s -mcpu=mvp -asm-verbose=false -disable-wasm-fallthrough-return-opt -wasm-disable-explicit-locals -wasm-keep-registers | FileCheck %s

; Test zeroext and signext ABI keywords

target triple = "wasm32-unknown-unknown"

; CHECK-LABEL: z2s_func:
; CHECK-NEXT: .functype z2s_func (i32) -> (i32){{$}}
; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 24{{$}}
; CHECK-NEXT: i32.shl $push[[NUM2:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
; CHECK-NEXT: i32.const $push[[NUM1:[0-9]+]]=, 24{{$}}
; CHECK-NEXT: i32.shr_s $push[[NUM3:[0-9]+]]=, $pop[[NUM2]], $pop[[NUM1]]{{$}}
; CHECK-NEXT: return $pop[[NUM3]]{{$}}
define signext i8 @z2s_func(i8 zeroext %t) {
  ret i8 %t
}

; CHECK-LABEL: s2z_func:
; CHECK-NEXT: .functype s2z_func (i32) -> (i32){{$}}
; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 255{{$}}
; CHECK-NEXT: i32.and $push[[NUM1:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
; CHECK-NEXT: return $pop[[NUM1]]{{$}}
define zeroext i8 @s2z_func(i8 signext %t) {
  ret i8 %t
}

; CHECK-LABEL: z2s_call:
; CHECK-NEXT: .functype z2s_call (i32) -> (i32){{$}}
; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 255{{$}}
; CHECK-NEXT: i32.and $push[[NUM1:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
; CHECK-NEXT: call $push[[NUM2:[0-9]+]]=, z2s_func, $pop[[NUM1]]{{$}}
; CHECK-NEXT: return $pop[[NUM2]]{{$}}
define i32 @z2s_call(i32 %t) {
  %s = trunc i32 %t to i8
  %u = call signext i8 @z2s_func(i8 zeroext %s)
  %v = sext i8 %u to i32
  ret i32 %v
}

; CHECK-LABEL: s2z_call:
; CHECK-NEXT: .functype s2z_call (i32) -> (i32){{$}}
; CHECK-NEXT: i32.const $push[[NUM0:[0-9]+]]=, 24{{$}}
; CHECK-NEXT: i32.shl $push[[NUM1:[0-9]+]]=, $0, $pop[[NUM0]]{{$}}
; CHECK-NEXT: i32.const $push[[NUM6:[0-9]+]]=, 24{{$}}
; CHECK-NEXT: i32.shr_s $push[[NUM2:[0-9]+]]=, $pop[[NUM1]], $pop[[NUM6]]{{$}}
; CHECK-NEXT: call $push[[NUM3:[0-9]]]=, s2z_func, $pop[[NUM2]]{{$}}
; CHECK-NEXT: i32.const $push[[NUM7:[0-9]+]]=, 24{{$}}
; CHECK-NEXT: i32.shl $push[[NUM4:[0-9]+]]=, $pop[[NUM3]], $pop[[NUM7]]{{$}}
; CHECK-NEXT: i32.const $push[[NUM8:[0-9]+]]=, 24{{$}}
; CHECK-NEXT: i32.shr_s $push[[NUM5:[0-9]+]]=, $pop[[NUM4]], $pop[[NUM8]]{{$}}
; CHECK-NEXT: return $pop[[NUM5]]{{$}}
define i32 @s2z_call(i32 %t) {
  %s = trunc i32 %t to i8
  %u = call zeroext i8 @s2z_func(i8 signext %s)
  %v = sext i8 %u to i32
  ret i32 %v
}