; RUN: opt < %s -passes=jump-threading -S | FileCheck %s
; Test whether two consecutive switches with identical structures assign the
; proper value to the proper variable. This is really testing
; Instruction::isIdenticalToWhenDefined, as previously that function was
; returning true if the value part of the operands of two phis were identical,
; even if the incoming blocks were not.
; NB: this function should be pruned down more.
%struct._GList = type { ptr, ptr, ptr }
%struct.filter_def = type { ptr, ptr }
@capture_filters = external hidden global ptr, align 8
@display_filters = external hidden global ptr, align 8
@.str2 = external hidden unnamed_addr constant [10 x i8], align 1
@__PRETTY_FUNCTION__.copy_filter_list = external hidden unnamed_addr constant [62 x i8], align 1
@.str12 = external hidden unnamed_addr constant [22 x i8], align 1
@.str13 = external hidden unnamed_addr constant [31 x i8], align 1
@capture_edited_filters = external hidden global ptr, align 8
@display_edited_filters = external hidden global ptr, align 8
@__PRETTY_FUNCTION__.get_filter_list = external hidden unnamed_addr constant [44 x i8], align 1
declare void @g_assertion_message(ptr, ptr, i32, ptr, ptr) noreturn
declare void @g_free(ptr)
declare ptr @g_list_first(ptr)
declare noalias ptr @g_malloc(i64)
define void @copy_filter_list(i32 %dest_type, i32 %src_type) nounwind uwtable ssp {
entry:
br label %do.body
do.body: ; preds = %entry
%cmp = icmp ne i32 %dest_type, %src_type
br i1 %cmp, label %if.then, label %if.else
if.then: ; preds = %do.body
br label %if.end
if.else: ; preds = %do.body
call void @g_assertion_message_expr(ptr null, ptr @.str2, i32 581, ptr @__PRETTY_FUNCTION__.copy_filter_list, ptr @.str12) noreturn
unreachable
if.end: ; preds = %if.then
br label %do.end
do.end: ; preds = %if.end
switch i32 %dest_type, label %sw.default.i [
i32 0, label %sw.bb.i
i32 1, label %sw.bb1.i
i32 2, label %sw.bb2.i
i32 3, label %sw.bb3.i
]
sw.bb.i: ; preds = %do.end
br label %get_filter_list.exit
sw.bb1.i: ; preds = %do.end
br label %get_filter_list.exit
sw.bb2.i: ; preds = %do.end
br label %get_filter_list.exit
sw.bb3.i: ; preds = %do.end
br label %get_filter_list.exit
sw.default.i: ; preds = %do.end
call void @g_assertion_message(ptr null, ptr @.str2, i32 408, ptr @__PRETTY_FUNCTION__.get_filter_list, ptr null) noreturn nounwind
unreachable
get_filter_list.exit: ; preds = %sw.bb3.i, %sw.bb2.i, %sw.bb1.i, %sw.bb.i
%0 = phi ptr [ @display_edited_filters, %sw.bb3.i ], [ @capture_edited_filters, %sw.bb2.i ], [ @display_filters, %sw.bb1.i ], [ @capture_filters, %sw.bb.i ]
switch i32 %src_type, label %sw.default.i5 [
i32 0, label %sw.bb.i1
i32 1, label %sw.bb1.i2
i32 2, label %sw.bb2.i3
i32 3, label %sw.bb3.i4
]
sw.bb.i1: ; preds = %get_filter_list.exit
br label %get_filter_list.exit6
sw.bb1.i2: ; preds = %get_filter_list.exit
br label %get_filter_list.exit6
sw.bb2.i3: ; preds = %get_filter_list.exit
br label %get_filter_list.exit6
sw.bb3.i4: ; preds = %get_filter_list.exit
br label %get_filter_list.exit6
sw.default.i5: ; preds = %get_filter_list.exit
call void @g_assertion_message(ptr null, ptr @.str2, i32 408, ptr @__PRETTY_FUNCTION__.get_filter_list, ptr null) noreturn nounwind
unreachable
; CHECK: get_filter_list.exit
get_filter_list.exit6: ; preds = %sw.bb3.i4, %sw.bb2.i3, %sw.bb1.i2, %sw.bb.i1
%1 = phi ptr [ @display_edited_filters, %sw.bb3.i4 ], [ @capture_edited_filters, %sw.bb2.i3 ], [ @display_filters, %sw.bb1.i2 ], [ @capture_filters, %sw.bb.i1 ]
; CHECK: %2 = load
%2 = load ptr, ptr %1, align 8
; We should have jump-threading insert an additional load here for the value
; coming out of the first switch, which is picked up by a subsequent phi
; CHECK: %.pr = load ptr, ptr %0
; CHECK-NEXT: br label %while.cond
br label %while.cond
; CHECK: while.cond
while.cond: ; preds = %while.body, %get_filter_list.exit6
; CHECK: {{= phi .*%.pr}}
%3 = load ptr, ptr %0, align 8
; CHECK: tobool
%tobool = icmp ne ptr %3, null
br i1 %tobool, label %while.body, label %while.end
while.body: ; preds = %while.cond
%4 = load ptr, ptr %0, align 8
%5 = load ptr, ptr %0, align 8
%call2 = call ptr @g_list_first(ptr %5)
%6 = load ptr, ptr %call2, align 8
%7 = load ptr, ptr %6, align 8
call void @g_free(ptr %7) nounwind
%strval.i = getelementptr inbounds %struct.filter_def, ptr %6, i32 0, i32 1
%8 = load ptr, ptr %strval.i, align 8
call void @g_free(ptr %8) nounwind
call void @g_free(ptr %6) nounwind
%call.i = call ptr @g_list_remove_link(ptr %4, ptr %call2) nounwind
store ptr %call.i, ptr %0, align 8
br label %while.cond
while.end: ; preds = %while.cond
br label %do.body4
do.body4: ; preds = %while.end
%9 = load ptr, ptr %0, align 8
%call5 = call i32 @g_list_length(ptr %9)
%cmp6 = icmp eq i32 %call5, 0
br i1 %cmp6, label %if.then7, label %if.else8
if.then7: ; preds = %do.body4
br label %if.end9
if.else8: ; preds = %do.body4
call void @g_assertion_message_expr(ptr null, ptr @.str2, i32 600, ptr @__PRETTY_FUNCTION__.copy_filter_list, ptr @.str13) noreturn
unreachable
if.end9: ; preds = %if.then7
br label %do.end10
do.end10: ; preds = %if.end9
br label %while.cond11
while.cond11: ; preds = %cond.end, %do.end10
%cond10 = phi ptr [ %cond, %cond.end ], [ %2, %do.end10 ]
%tobool12 = icmp ne ptr %cond10, null
br i1 %tobool12, label %while.body13, label %while.end16
while.body13: ; preds = %while.cond11
%10 = load ptr, ptr %cond10, align 8
%11 = load ptr, ptr %0, align 8
%12 = load ptr, ptr %10, align 8
%strval = getelementptr inbounds %struct.filter_def, ptr %10, i32 0, i32 1
%13 = load ptr, ptr %strval, align 8
%call.i7 = call noalias ptr @g_malloc(i64 16) nounwind
%call1.i = call noalias ptr @g_strdup(ptr %12) nounwind
store ptr %call1.i, ptr %call.i7, align 8
%call2.i = call noalias ptr @g_strdup(ptr %13) nounwind
%strval.i9 = getelementptr inbounds %struct.filter_def, ptr %call.i7, i32 0, i32 1
store ptr %call2.i, ptr %strval.i9, align 8
%call3.i = call ptr @g_list_append(ptr %11, ptr %call.i7) nounwind
store ptr %call3.i, ptr %0, align 8
%tobool15 = icmp ne ptr %cond10, null
br i1 %tobool15, label %cond.true, label %cond.false
cond.true: ; preds = %while.body13
%next = getelementptr inbounds %struct._GList, ptr %cond10, i32 0, i32 1
%14 = load ptr, ptr %next, align 8
br label %cond.end
cond.false: ; preds = %while.body13
br label %cond.end
cond.end: ; preds = %cond.false, %cond.true
%cond = phi ptr [ %14, %cond.true ], [ null, %cond.false ]
br label %while.cond11
while.end16: ; preds = %while.cond11
ret void
}
declare void @g_assertion_message_expr(ptr, ptr, i32, ptr, ptr) noreturn
declare i32 @g_list_length(ptr)
declare noalias ptr @g_strdup(ptr)
declare ptr @g_list_append(ptr, ptr)
declare ptr @g_list_remove_link(ptr, ptr)
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