| ; RUN: opt -inline -instcombine -S < %s |
| ; PR12967 |
| |
| 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" |
| target triple = "x86_64-apple-macosx10.7.0" |
| |
| @d = common global i32 0, align 4 |
| @c = common global i32 0, align 4 |
| @e = common global i32 0, align 4 |
| @f = common global i32 0, align 4 |
| @a = common global i32 0, align 4 |
| @b = common global i32 0, align 4 |
| |
| define signext i8 @fn1(i32 %p1) nounwind uwtable readnone ssp { |
| entry: |
| %shr = lshr i32 1, %p1 |
| %conv = trunc i32 %shr to i8 |
| ret i8 %conv |
| } |
| |
| define void @fn4() nounwind uwtable ssp { |
| entry: |
| %0 = load i32* @d, align 4, !tbaa !0 |
| %cmp = icmp eq i32 %0, 0 |
| %conv = zext i1 %cmp to i32 |
| store i32 %conv, i32* @c, align 4, !tbaa !0 |
| tail call void @fn3(i32 %conv) nounwind |
| ret void |
| } |
| |
| define void @fn3(i32 %p1) nounwind uwtable ssp { |
| entry: |
| %and = and i32 %p1, 8 |
| store i32 %and, i32* @e, align 4, !tbaa !0 |
| %sub = add nsw i32 %and, -1 |
| store i32 %sub, i32* @f, align 4, !tbaa !0 |
| %0 = load i32* @a, align 4, !tbaa !0 |
| %tobool = icmp eq i32 %0, 0 |
| br i1 %tobool, label %if.else, label %if.then |
| |
| if.then: ; preds = %entry |
| %1 = load i32* @b, align 4, !tbaa !0 |
| %.lobit = lshr i32 %1, 31 |
| %2 = trunc i32 %.lobit to i8 |
| %.not = xor i8 %2, 1 |
| br label %if.end |
| |
| if.else: ; preds = %entry |
| %call = tail call signext i8 @fn1(i32 %sub) nounwind |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %storemerge.in = phi i8 [ %call, %if.else ], [ %.not, %if.then ] |
| %storemerge = sext i8 %storemerge.in to i32 |
| store i32 %storemerge, i32* @b, align 4 |
| ret void |
| } |
| |
| !0 = metadata !{metadata !"int", metadata !1} |
| !1 = metadata !{metadata !"omnipotent char", metadata !2} |
| !2 = metadata !{metadata !"Simple C/C++ TBAA"} |
