divmod.ll   [plain text]

; RUN: llc < %s -mtriple=arm-apple-ios5.0 -mcpu=cortex-a8 | FileCheck %s -check-prefix=A8
; RUN: llc < %s -mtriple=arm-apple-ios5.0 -mcpu=swift     | FileCheck %s -check-prefix=SWIFT

; rdar://12481395

define void @foo(i32 %x, i32 %y, i32* nocapture %P) nounwind ssp {
entry:
; A8: foo:
; A8: bl ___divmodsi4
; A8-NOT: bl ___divmodsi4

; SWIFT: foo:
; SWIFT: sdiv
; SWIFT: mls
; SWIFT-NOT: bl __divmodsi4
  %div = sdiv i32 %x, %y
  store i32 %div, i32* %P, align 4
  %rem = srem i32 %x, %y
  %arrayidx6 = getelementptr inbounds i32* %P, i32 1
  store i32 %rem, i32* %arrayidx6, align 4
  ret void
}

define void @bar(i32 %x, i32 %y, i32* nocapture %P) nounwind ssp {
entry:
; A8: bar:
; A8: bl ___udivmodsi4
; A8-NOT: bl ___udivmodsi4

; SWIFT: bar:
; SWIFT: udiv
; SWIFT: mls
; SWIFT-NOT: bl __udivmodsi4
  %div = udiv i32 %x, %y
  store i32 %div, i32* %P, align 4
  %rem = urem i32 %x, %y
  %arrayidx6 = getelementptr inbounds i32* %P, i32 1
  store i32 %rem, i32* %arrayidx6, align 4
  ret void
}

; rdar://9280991
@flags = external unnamed_addr global i32
@tabsize = external unnamed_addr global i32

define void @do_indent(i32 %cols) nounwind {
entry:
; A8: do_indent:
; SWIFT: do_indent:
  %0 = load i32* @flags, align 4
  %1 = and i32 %0, 67108864
  %2 = icmp eq i32 %1, 0
  br i1 %2, label %bb1, label %bb

bb:
; A8: bl ___divmodsi4
; SWIFT: sdiv
; SWIFT: mls
; SWIFT-NOT: bl __divmodsi4
  %3 = load i32* @tabsize, align 4
  %4 = srem i32 %cols, %3
  %5 = sdiv i32 %cols, %3
  %6 = tail call i32 @llvm.objectsize.i32(i8* null, i1 false)
  %7 = tail call i8* @__memset_chk(i8* null, i32 9, i32 %5, i32 %6) nounwind
  br label %bb1

bb1:
  %line_indent_len.0 = phi i32 [ %4, %bb ], [ 0, %entry ]
  %8 = getelementptr inbounds i8* null, i32 %line_indent_len.0
  store i8 0, i8* %8, align 1
  ret void
}

declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readnone
declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind

; rdar://11714607
define i32 @howmany(i32 %x, i32 %y) nounwind {
entry:
; A8: howmany:
; A8: bl ___udivmodsi4
; A8-NOT: ___udivsi3

; SWIFT: howmany:
; SWIFT: udiv
; SWIFT: mls
; SWIFT-NOT: bl __udivmodsi4
  %rem = urem i32 %x, %y
  %div = udiv i32 %x, %y
  %not.cmp = icmp ne i32 %rem, 0
  %add = zext i1 %not.cmp to i32
  %cond = add i32 %add, %div
  ret i32 %cond
}