llvm-mirror/test/CodeGen/X86/fast-isel-select-cmov.ll

; RUN: llc < %s -fast-isel -fast-isel-abort=1 -mtriple=x86_64-apple-darwin10                  | FileCheck %s

; Test conditional move for the supported types (i16, i32, and i32) and
; conditon input (argument or cmp). Currently i8 is not supported.

define zeroext i16 @select_cmov_i16(i1 zeroext %cond, i16 zeroext %a, i16 zeroext %b) {
; CHECK-LABEL: select_cmov_i16
; CHECK:       testb   $1, %dil
; CHECK-NEXT:  cmovew  %dx, %si
; CHECK-NEXT:  movzwl  %si, %eax
  %1 = select i1 %cond, i16 %a, i16 %b
  ret i16 %1
}

define zeroext i16 @select_cmp_cmov_i16(i16 zeroext %a, i16 zeroext %b) {
; CHECK-LABEL: select_cmp_cmov_i16
; CHECK:       cmpw    %si, %di
; CHECK-NEXT:  cmovbw  %di, %si
; CHECK-NEXT:  movzwl  %si, %eax
  %1 = icmp ult i16 %a, %b
  %2 = select i1 %1, i16 %a, i16 %b
  ret i16 %2
}

define i32 @select_cmov_i32(i1 zeroext %cond, i32 %a, i32 %b) {
; CHECK-LABEL: select_cmov_i32
; CHECK:       testb   $1, %dil
; CHECK-NEXT:  cmovel  %edx, %esi
; CHECK-NEXT:  movl    %esi, %eax
  %1 = select i1 %cond, i32 %a, i32 %b
  ret i32 %1
}

define i32 @select_cmp_cmov_i32(i32 %a, i32 %b) {
; CHECK-LABEL: select_cmp_cmov_i32
; CHECK:       cmpl    %esi, %edi
; CHECK-NEXT:  cmovbl  %edi, %esi
; CHECK-NEXT:  movl    %esi, %eax
  %1 = icmp ult i32 %a, %b
  %2 = select i1 %1, i32 %a, i32 %b
  ret i32 %2
}

define i64 @select_cmov_i64(i1 zeroext %cond, i64 %a, i64 %b) {
; CHECK-LABEL: select_cmov_i64
; CHECK:       testb   $1, %dil
; CHECK-NEXT:  cmoveq  %rdx, %rsi
; CHECK-NEXT:  movq    %rsi, %rax
  %1 = select i1 %cond, i64 %a, i64 %b
  ret i64 %1
}

define i64 @select_cmp_cmov_i64(i64 %a, i64 %b) {
; CHECK-LABEL: select_cmp_cmov_i64
; CHECK:       cmpq    %rsi, %rdi
; CHECK-NEXT:  cmovbq  %rdi, %rsi
; CHECK-NEXT:  movq    %rsi, %rax
  %1 = icmp ult i64 %a, %b
  %2 = select i1 %1, i64 %a, i64 %b
  ret i64 %2
}