forked from OSchip/llvm-project
62 lines
1.9 KiB
LLVM
62 lines
1.9 KiB
LLVM
; 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"}
|