llvm-mirror/test/CodeGen/X86/divide-by-constant.ll

; RUN: llc < %s -mtriple=i686-pc-linux-gnu -asm-verbose=0 | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
target triple = "i686-pc-linux-gnu"

define zeroext i16 @test1(i16 zeroext %x) nounwind {
entry:
	%div = udiv i16 %x, 33
	ret i16 %div
; CHECK: test1:
; CHECK: imull	$63551, %eax, %eax
; CHECK-NEXT: shrl	$21, %eax
; CHECK-NEXT: ret
}

define zeroext i16 @test2(i8 signext %x, i16 zeroext %c) nounwind readnone ssp noredzone {
entry:
  %div = udiv i16 %c, 3
  ret i16 %div

; CHECK: test2:
; CHECK: imull	$43691, %eax, %eax
; CHECK-NEXT: shrl	$17, %eax
; CHECK-NEXT: ret
}

define zeroext i8 @test3(i8 zeroext %x, i8 zeroext %c) nounwind readnone ssp noredzone {
entry:
  %div = udiv i8 %c, 3
  ret i8 %div

; CHECK: test3:
; CHECK: imull	$171, %eax, %eax
; CHECK-NEXT: shrb	%ah
; CHECK-NEXT: movzbl	%ah, %eax
; CHECK-NEXT: ret
}

define signext i16 @test4(i16 signext %x) nounwind {
entry:
	%div = sdiv i16 %x, 33		; <i32> [#uses=1]
	ret i16 %div
}