Add file.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138083 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 162 insertions, 0 deletions

diff --git a/test/Transforms/PhaseOrdering/2010-03-22-empty-baseclass.ll b/test/Transforms/PhaseOrdering/2010-03-22-empty-baseclass.ll
new file mode 100644
index 0000000000..8859da8de1
--- /dev/null
+++ b/test/Transforms/PhaseOrdering/2010-03-22-empty-baseclass.ll
@@ -0,0 +1,162 @@
+; RUN: opt -O2 %s -S -o - | FileCheck %s
+
+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"
+target triple = "x86_64-apple-darwin11.1"
+
+%"struct.boost::compressed_pair<empty_t,int>" = type { %"struct.boost::details::compressed_pair_imp<empty_t,int,1>" }
+%"struct.boost::details::compressed_pair_imp<empty_t,int,1>" = type { i32 }
+%struct.empty_base_t = type <{ i8 }>
+%struct.empty_t = type <{ i8 }>
+
+@.str = private constant [25 x i8] c"x.second() was clobbered\00", align 1 ; <[25 x i8]*> [#uses=1]
+
+define i32 @main(i32 %argc, i8** %argv) ssp {
+entry:
+  %argc_addr = alloca i32, align 4                ; <i32*> [#uses=1]
+  %argv_addr = alloca i8**, align 8               ; <i8***> [#uses=1]
+  %retval = alloca i32                            ; <i32*> [#uses=2]
+  %0 = alloca i32                                 ; <i32*> [#uses=2]
+  %retval.1 = alloca i8                           ; <i8*> [#uses=2]
+  %1 = alloca %struct.empty_base_t                ; <%struct.empty_base_t*> [#uses=1]
+  %2 = alloca %struct.empty_base_t*               ; <%struct.empty_base_t**> [#uses=1]
+  %x = alloca %"struct.boost::compressed_pair<empty_t,int>" ; <%"struct.boost::compressed_pair<empty_t,int>"*> [#uses=3]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store i32 %argc, i32* %argc_addr
+  store i8** %argv, i8*** %argv_addr
+  %3 = call i32* @_ZN5boost15compressed_pairI7empty_tiE6secondEv(%"struct.boost::compressed_pair<empty_t,int>"* %x) ssp ; <i32*> [#uses=1]
+  store i32 -3, i32* %3, align 4
+  %4 = call %struct.empty_base_t* @_ZN5boost15compressed_pairI7empty_tiE5firstEv(%"struct.boost::compressed_pair<empty_t,int>"* %x) ssp ; <%struct.empty_base_t*> [#uses=1]
+  store %struct.empty_base_t* %4, %struct.empty_base_t** %2, align 8
+  call void @_ZN7empty_tC1Ev(%struct.empty_base_t* %1) nounwind
+  %5 = call i32* @_ZN5boost15compressed_pairI7empty_tiE6secondEv(%"struct.boost::compressed_pair<empty_t,int>"* %x) ssp ; <i32*> [#uses=1]
+  %6 = load i32* %5, align 4                      ; <i32> [#uses=1]
+  %7 = icmp ne i32 %6, -3                         ; <i1> [#uses=1]
+  %8 = zext i1 %7 to i8                           ; <i8> [#uses=1]
+  store i8 %8, i8* %retval.1, align 1
+  %9 = load i8* %retval.1, align 1                ; <i8> [#uses=1]
+  %toBool = icmp ne i8 %9, 0                      ; <i1> [#uses=1]
+  br i1 %toBool, label %bb, label %bb1
+
+bb:                                               ; preds = %entry
+  %10 = call i32 @puts(i8* getelementptr inbounds ([25 x i8]* @.str, i64 0, i64 0)) ; <i32> [#uses=0]
+  call void @abort() noreturn
+  unreachable
+
+bb1:                                              ; preds = %entry
+  store i32 0, i32* %0, align 4
+  %11 = load i32* %0, align 4                     ; <i32> [#uses=1]
+  store i32 %11, i32* %retval, align 4
+  br label %return
+
+; CHECK-NOT: x.second() was clobbered
+; CHECK: ret i32
+return:                                           ; preds = %bb1
+  %retval2 = load i32* %retval                    ; <i32> [#uses=1]
+  ret i32 %retval2
+}
+
+define linkonce_odr void @_ZN12empty_base_tC2Ev(%struct.empty_base_t* %this) nounwind ssp align 2 {
+entry:
+  %this_addr = alloca %struct.empty_base_t*, align 8 ; <%struct.empty_base_t**> [#uses=1]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store %struct.empty_base_t* %this, %struct.empty_base_t** %this_addr
+  br label %return
+
+return:                                           ; preds = %entry
+  ret void
+}
+
+define linkonce_odr void @_ZN7empty_tC1Ev(%struct.empty_base_t* %this) nounwind ssp align 2 {
+entry:
+  %this_addr = alloca %struct.empty_base_t*, align 8 ; <%struct.empty_base_t**> [#uses=2]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store %struct.empty_base_t* %this, %struct.empty_base_t** %this_addr
+  %0 = load %struct.empty_base_t** %this_addr, align 8 ; <%struct.empty_base_t*> [#uses=1]
+  call void @_ZN12empty_base_tC2Ev(%struct.empty_base_t* %0) nounwind
+  br label %return
+
+return:                                           ; preds = %entry
+  ret void
+}
+
+define linkonce_odr i32* @_ZN5boost7details19compressed_pair_impI7empty_tiLi1EE6secondEv(%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %this) nounwind ssp align 2 {
+entry:
+  %this_addr = alloca %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"*, align 8 ; <%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"**> [#uses=2]
+  %retval = alloca i32*                           ; <i32**> [#uses=2]
+  %0 = alloca i32*                                ; <i32**> [#uses=2]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %this, %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"** %this_addr
+  %1 = load %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"** %this_addr, align 8 ; <%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"*> [#uses=1]
+  %2 = getelementptr inbounds %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %1, i32 0, i32 0 ; <i32*> [#uses=1]
+  store i32* %2, i32** %0, align 8
+  %3 = load i32** %0, align 8                     ; <i32*> [#uses=1]
+  store i32* %3, i32** %retval, align 8
+  br label %return
+
+return:                                           ; preds = %entry
+  %retval1 = load i32** %retval                   ; <i32*> [#uses=1]
+  ret i32* %retval1
+}
+
+define linkonce_odr i32* @_ZN5boost15compressed_pairI7empty_tiE6secondEv(%"struct.boost::compressed_pair<empty_t,int>"* %this) ssp align 2 {
+entry:
+  %this_addr = alloca %"struct.boost::compressed_pair<empty_t,int>"*, align 8 ; <%"struct.boost::compressed_pair<empty_t,int>"**> [#uses=2]
+  %retval = alloca i32*                           ; <i32**> [#uses=2]
+  %0 = alloca i32*                                ; <i32**> [#uses=2]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store %"struct.boost::compressed_pair<empty_t,int>"* %this, %"struct.boost::compressed_pair<empty_t,int>"** %this_addr
+  %1 = load %"struct.boost::compressed_pair<empty_t,int>"** %this_addr, align 8 ; <%"struct.boost::compressed_pair<empty_t,int>"*> [#uses=1]
+  %2 = getelementptr inbounds %"struct.boost::compressed_pair<empty_t,int>"* %1, i32 0, i32 0 ; <%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"*> [#uses=1]
+  %3 = call i32* @_ZN5boost7details19compressed_pair_impI7empty_tiLi1EE6secondEv(%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %2) nounwind ; <i32*> [#uses=1]
+  store i32* %3, i32** %0, align 8
+  %4 = load i32** %0, align 8                     ; <i32*> [#uses=1]
+  store i32* %4, i32** %retval, align 8
+  br label %return
+
+return:                                           ; preds = %entry
+  %retval1 = load i32** %retval                   ; <i32*> [#uses=1]
+  ret i32* %retval1
+}
+
+define linkonce_odr %struct.empty_base_t* @_ZN5boost7details19compressed_pair_impI7empty_tiLi1EE5firstEv(%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %this) nounwind ssp align 2 {
+entry:
+  %this_addr = alloca %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"*, align 8 ; <%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"**> [#uses=2]
+  %retval = alloca %struct.empty_base_t*          ; <%struct.empty_base_t**> [#uses=2]
+  %0 = alloca %struct.empty_base_t*               ; <%struct.empty_base_t**> [#uses=2]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %this, %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"** %this_addr
+  %1 = load %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"** %this_addr, align 8 ; <%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"*> [#uses=1]
+  %2 = bitcast %"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %1 to %struct.empty_base_t* ; <%struct.empty_base_t*> [#uses=1]
+  store %struct.empty_base_t* %2, %struct.empty_base_t** %0, align 8
+  %3 = load %struct.empty_base_t** %0, align 8    ; <%struct.empty_base_t*> [#uses=1]
+  store %struct.empty_base_t* %3, %struct.empty_base_t** %retval, align 8
+  br label %return
+
+return:                                           ; preds = %entry
+  %retval1 = load %struct.empty_base_t** %retval  ; <%struct.empty_base_t*> [#uses=1]
+  ret %struct.empty_base_t* %retval1
+}
+
+define linkonce_odr %struct.empty_base_t* @_ZN5boost15compressed_pairI7empty_tiE5firstEv(%"struct.boost::compressed_pair<empty_t,int>"* %this) ssp align 2 {
+entry:
+  %this_addr = alloca %"struct.boost::compressed_pair<empty_t,int>"*, align 8 ; <%"struct.boost::compressed_pair<empty_t,int>"**> [#uses=2]
+  %retval = alloca %struct.empty_base_t*          ; <%struct.empty_base_t**> [#uses=2]
+  %0 = alloca %struct.empty_base_t*               ; <%struct.empty_base_t**> [#uses=2]
+  %"alloca point" = bitcast i32 0 to i32          ; <i32> [#uses=0]
+  store %"struct.boost::compressed_pair<empty_t,int>"* %this, %"struct.boost::compressed_pair<empty_t,int>"** %this_addr
+  %1 = load %"struct.boost::compressed_pair<empty_t,int>"** %this_addr, align 8 ; <%"struct.boost::compressed_pair<empty_t,int>"*> [#uses=1]
+  %2 = getelementptr inbounds %"struct.boost::compressed_pair<empty_t,int>"* %1, i32 0, i32 0 ; <%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"*> [#uses=1]
+  %3 = call %struct.empty_base_t* @_ZN5boost7details19compressed_pair_impI7empty_tiLi1EE5firstEv(%"struct.boost::details::compressed_pair_imp<empty_t,int,1>"* %2) nounwind ; <%struct.empty_base_t*> [#uses=1]
+  store %struct.empty_base_t* %3, %struct.empty_base_t** %0, align 8
+  %4 = load %struct.empty_base_t** %0, align 8    ; <%struct.empty_base_t*> [#uses=1]
+  store %struct.empty_base_t* %4, %struct.empty_base_t** %retval, align 8
+  br label %return
+
+return:                                           ; preds = %entry
+  %retval1 = load %struct.empty_base_t** %retval  ; <%struct.empty_base_t*> [#uses=1]
+  ret %struct.empty_base_t* %retval1
+}
+
+declare i32 @puts(i8*)
+
+declare void @abort() noreturn