1 ; RUN: opt -inline -instcombine -S < %s
4 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-S128"
5 target triple = "x86_64-apple-macosx10.7.0"
7 @d = common global i32 0, align 4
8 @c = common global i32 0, align 4
9 @e = common global i32 0, align 4
10 @f = common global i32 0, align 4
11 @a = common global i32 0, align 4
12 @b = common global i32 0, align 4
14 define signext i8 @fn1(i32 %p1) nounwind uwtable readnone ssp {
16 %shr = lshr i32 1, %p1
17 %conv = trunc i32 %shr to i8
21 define void @fn4() nounwind uwtable ssp {
23 %0 = load i32* @d, align 4
24 %cmp = icmp eq i32 %0, 0
25 %conv = zext i1 %cmp to i32
26 store i32 %conv, i32* @c, align 4
27 tail call void @fn3(i32 %conv) nounwind
31 define void @fn3(i32 %p1) nounwind uwtable ssp {
34 store i32 %and, i32* @e, align 4
35 %sub = add nsw i32 %and, -1
36 store i32 %sub, i32* @f, align 4
37 %0 = load i32* @a, align 4
38 %tobool = icmp eq i32 %0, 0
39 br i1 %tobool, label %if.else, label %if.then
41 if.then: ; preds = %entry
42 %1 = load i32* @b, align 4
43 %.lobit = lshr i32 %1, 31
44 %2 = trunc i32 %.lobit to i8
48 if.else: ; preds = %entry
49 %call = tail call signext i8 @fn1(i32 %sub) nounwind
52 if.end: ; preds = %if.else, %if.then
53 %storemerge.in = phi i8 [ %call, %if.else ], [ %.not, %if.then ]
54 %storemerge = sext i8 %storemerge.in to i32
55 store i32 %storemerge, i32* @b, align 4