1; When optimising for minimum size, we don't want to expand a div to a mul
2; and a shift sequence. As a result, the urem instruction e.g. will not be
3; expanded to a sequence of umull, lsrs, muls and sub instructions, but
4; just a call to __aeabi_uidivmod.
5;
6; RUN: llc -mtriple=armv7a-eabi -mattr=-neon -verify-machineinstrs %s -o - | FileCheck %s
7
8target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
9target triple = "thumbv7m-arm-none-eabi"
10
11define i32 @foo1() local_unnamed_addr #0 {
12entry:
13; CHECK-LABEL: foo1:
14; CHECK:__aeabi_idiv
15; CHECK-NOT: smmul
16  %call = tail call i32 bitcast (i32 (...)* @GetValue to i32 ()*)()
17  %div = sdiv i32 %call, 1000000
18  ret i32 %div
19}
20
21define i32 @foo2() local_unnamed_addr #0 {
22entry:
23; CHECK-LABEL: foo2:
24; CHECK: __aeabi_uidiv
25; CHECK-NOT: umull
26  %call = tail call i32 bitcast (i32 (...)* @GetValue to i32 ()*)()
27  %div = udiv i32 %call, 1000000
28  ret i32 %div
29}
30
31define i32 @foo3() local_unnamed_addr #0 {
32entry:
33; CHECK-LABEL: foo3:
34; CHECK: __aeabi_uidivmod
35; CHECK-NOT: umull
36  %call = tail call i32 bitcast (i32 (...)* @GetValue to i32 ()*)()
37  %rem = urem i32 %call, 1000000
38  %cmp = icmp eq i32 %rem, 0
39  %conv = zext i1 %cmp to i32
40  ret i32 %conv
41}
42
43declare i32 @GetValue(...) local_unnamed_addr
44
45attributes #0 = { minsize nounwind optsize }
46