1 ; RUN: llc -march=x86-64 < %s | FileCheck %s
3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
4 target triple = "x86_64-pc-linux-gnu"
6 ; DAGCombiner should fold this code in finite time.
9 define void @D() nounwind readnone {
13 while.cond: ; preds = %while.cond, %bb.nph
14 %tmp6 = load i32* undef, align 4
15 %and = or i64 undef, undef
16 %conv11 = zext i32 undef to i64
17 %conv14 = zext i32 %tmp6 to i64
18 %shl15 = shl i64 %conv14, 1
19 %shl15.masked = and i64 %shl15, 4294967294
20 %and17 = or i64 %shl15.masked, %conv11
21 %add = add i64 %and17, 1
22 %xor = xor i64 %add, %and
23 %tmp20 = load i64* undef, align 8
24 %add21 = add i64 %xor, %tmp20
25 %conv22 = trunc i64 %add21 to i32
26 store i32 %conv22, i32* undef, align 4
27 br i1 false, label %while.end, label %while.cond
29 while.end: ; preds = %while.cond
34 ; DAGCombiner shouldn't fold the sdiv (ashr) away.
39 define i32 @main() nounwind {
41 %i = alloca i32, align 4
42 %j = alloca i8, align 1
43 store i32 127, i32* %i, align 4
44 store i8 0, i8* %j, align 1
45 %tmp3 = load i32* %i, align 4
46 %mul = mul nsw i32 %tmp3, 2
47 %conv4 = trunc i32 %mul to i8
48 %conv5 = sext i8 %conv4 to i32
49 %div6 = sdiv i32 %conv5, 2
50 %conv7 = trunc i32 %div6 to i8
51 %conv9 = sext i8 %conv7 to i32
52 %cmp = icmp eq i32 %conv9, -1
53 br i1 %cmp, label %if.then, label %if.end
55 if.then: ; preds = %entry
58 if.end: ; preds = %entry
59 call void @abort() noreturn
63 declare void @abort() noreturn
65 declare void @exit(i32) noreturn