diff options
Diffstat (limited to 'llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-end.ll')
-rw-r--r-- | llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-end.ll | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-end.ll b/llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-end.ll new file mode 100644 index 00000000000..44608cf67a3 --- /dev/null +++ b/llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-end.ll @@ -0,0 +1,131 @@ +; RUN: opt -S -wholeprogramdevirt %s | FileCheck %s + +target datalayout = "e-p:64:64" +target triple = "x86_64-unknown-linux-gnu" + +; CHECK: [[VT1DATA:@[^ ]*]] = private constant { [0 x i8], [4 x i8*], [8 x i8] } { [0 x i8] zeroinitializer, [4 x i8*] [i8* null, i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i32 (i8*)* @vf1i32 to i8*)], [8 x i8] c"\01\00\00\00\01\00\00\00" } +@vt1 = constant [4 x i8*] [ +i8* null, +i8* bitcast (i1 (i8*)* @vf0i1 to i8*), +i8* bitcast (i1 (i8*)* @vf1i1 to i8*), +i8* bitcast (i32 (i8*)* @vf1i32 to i8*) +] + +; CHECK: [[VT2DATA:@[^ ]*]] = private constant { [0 x i8], [3 x i8*], [8 x i8] } { [0 x i8] zeroinitializer, [3 x i8*] [i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i32 (i8*)* @vf2i32 to i8*)], [8 x i8] c"\02\00\00\00\02\00\00\00" } +@vt2 = constant [3 x i8*] [ +i8* bitcast (i1 (i8*)* @vf1i1 to i8*), +i8* bitcast (i1 (i8*)* @vf0i1 to i8*), +i8* bitcast (i32 (i8*)* @vf2i32 to i8*) +] + +; CHECK: [[VT3DATA:@[^ ]*]] = private constant { [0 x i8], [4 x i8*], [8 x i8] } { [0 x i8] zeroinitializer, [4 x i8*] [i8* null, i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i32 (i8*)* @vf3i32 to i8*)], [8 x i8] c"\03\00\00\00\01\00\00\00" } +@vt3 = constant [4 x i8*] [ +i8* null, +i8* bitcast (i1 (i8*)* @vf0i1 to i8*), +i8* bitcast (i1 (i8*)* @vf1i1 to i8*), +i8* bitcast (i32 (i8*)* @vf3i32 to i8*) +] + +; CHECK: [[VT4DATA:@[^ ]*]] = private constant { [0 x i8], [3 x i8*], [8 x i8] } { [0 x i8] zeroinitializer, [3 x i8*] [i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i32 (i8*)* @vf4i32 to i8*)], [8 x i8] c"\04\00\00\00\02\00\00\00" } +@vt4 = constant [3 x i8*] [ +i8* bitcast (i1 (i8*)* @vf1i1 to i8*), +i8* bitcast (i1 (i8*)* @vf0i1 to i8*), +i8* bitcast (i32 (i8*)* @vf4i32 to i8*) +] + +; CHECK: @vt1 = alias [4 x i8*], getelementptr inbounds ({ [0 x i8], [4 x i8*], [8 x i8] }, { [0 x i8], [4 x i8*], [8 x i8] }* [[VT1DATA]], i32 0, i32 1) +; CHECK: @vt2 = alias [3 x i8*], getelementptr inbounds ({ [0 x i8], [3 x i8*], [8 x i8] }, { [0 x i8], [3 x i8*], [8 x i8] }* [[VT2DATA]], i32 0, i32 1) +; CHECK: @vt3 = alias [4 x i8*], getelementptr inbounds ({ [0 x i8], [4 x i8*], [8 x i8] }, { [0 x i8], [4 x i8*], [8 x i8] }* [[VT3DATA]], i32 0, i32 1) +; CHECK: @vt4 = alias [3 x i8*], getelementptr inbounds ({ [0 x i8], [3 x i8*], [8 x i8] }, { [0 x i8], [3 x i8*], [8 x i8] }* [[VT4DATA]], i32 0, i32 1) + +define i1 @vf0i1(i8* %this) readnone { + ret i1 0 +} + +define i1 @vf1i1(i8* %this) readnone { + ret i1 1 +} + +define i32 @vf1i32(i8* %this) readnone { + ret i32 1 +} + +define i32 @vf2i32(i8* %this) readnone { + ret i32 2 +} + +define i32 @vf3i32(i8* %this) readnone { + ret i32 3 +} + +define i32 @vf4i32(i8* %this) readnone { + ret i32 4 +} + +; CHECK: define i1 @call1( +define i1 @call1(i8* %obj) { + %vtableptr = bitcast i8* %obj to [3 x i8*]** + %vtable = load [3 x i8*]*, [3 x i8*]** %vtableptr + ; CHECK: [[VT1:%[^ ]*]] = bitcast [3 x i8*]* {{.*}} to i8* + %vtablei8 = bitcast [3 x i8*]* %vtable to i8* + %p = call i1 @llvm.bitset.test(i8* %vtablei8, metadata !"bitset") + call void @llvm.assume(i1 %p) + %fptrptr = getelementptr [3 x i8*], [3 x i8*]* %vtable, i32 0, i32 0 + %fptr = load i8*, i8** %fptrptr + %fptr_casted = bitcast i8* %fptr to i1 (i8*)* + ; CHECK: [[VTGEP1:%[^ ]*]] = getelementptr i8, i8* [[VT1]], i64 28 + ; CHECK: [[VTLOAD1:%[^ ]*]] = load i8, i8* [[VTGEP1]] + ; CHECK: [[VTAND1:%[^ ]*]] = and i8 [[VTLOAD1]], 2 + ; CHECK: [[VTCMP1:%[^ ]*]] = icmp ne i8 [[VTAND1]], 0 + %result = call i1 %fptr_casted(i8* %obj) + ; CHECK: ret i1 [[VTCMP1]] + ret i1 %result +} + +; CHECK: define i1 @call2( +define i1 @call2(i8* %obj) { + %vtableptr = bitcast i8* %obj to [3 x i8*]** + %vtable = load [3 x i8*]*, [3 x i8*]** %vtableptr + ; CHECK: [[VT2:%[^ ]*]] = bitcast [3 x i8*]* {{.*}} to i8* + %vtablei8 = bitcast [3 x i8*]* %vtable to i8* + %p = call i1 @llvm.bitset.test(i8* %vtablei8, metadata !"bitset") + call void @llvm.assume(i1 %p) + %fptrptr = getelementptr [3 x i8*], [3 x i8*]* %vtable, i32 0, i32 1 + %fptr = load i8*, i8** %fptrptr + %fptr_casted = bitcast i8* %fptr to i1 (i8*)* + ; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, i8* [[VT2]], i64 28 + ; CHECK: [[VTLOAD2:%[^ ]*]] = load i8, i8* [[VTGEP2]] + ; CHECK: [[VTAND2:%[^ ]*]] = and i8 [[VTLOAD2]], 1 + ; CHECK: [[VTCMP2:%[^ ]*]] = icmp ne i8 [[VTAND2]], 0 + %result = call i1 %fptr_casted(i8* %obj) + ; CHECK: ret i1 [[VTCMP2]] + ret i1 %result +} + +; CHECK: define i32 @call3( +define i32 @call3(i8* %obj) { + %vtableptr = bitcast i8* %obj to [3 x i8*]** + %vtable = load [3 x i8*]*, [3 x i8*]** %vtableptr + ; CHECK: [[VT3:%[^ ]*]] = bitcast [3 x i8*]* {{.*}} to i8* + %vtablei8 = bitcast [3 x i8*]* %vtable to i8* + %p = call i1 @llvm.bitset.test(i8* %vtablei8, metadata !"bitset") + call void @llvm.assume(i1 %p) + %fptrptr = getelementptr [3 x i8*], [3 x i8*]* %vtable, i32 0, i32 2 + %fptr = load i8*, i8** %fptrptr + %fptr_casted = bitcast i8* %fptr to i32 (i8*)* + ; CHECK: [[VTGEP3:%[^ ]*]] = getelementptr i8, i8* [[VT3]], i64 24 + ; CHECK: [[VTBC3:%[^ ]*]] = bitcast i8* [[VTGEP3]] to i32* + ; CHECK: [[VTLOAD3:%[^ ]*]] = load i32, i32* [[VTBC3]] + %result = call i32 %fptr_casted(i8* %obj) + ; CHECK: ret i32 [[VTLOAD3]] + ret i32 %result +} + +declare i1 @llvm.bitset.test(i8*, metadata) +declare void @llvm.assume(i1) + +!0 = !{!"bitset", [4 x i8*]* @vt1, i32 8} +!1 = !{!"bitset", [3 x i8*]* @vt2, i32 0} +!2 = !{!"bitset", [4 x i8*]* @vt3, i32 8} +!3 = !{!"bitset", [3 x i8*]* @vt4, i32 0} +!llvm.bitsets = !{!0, !1, !2, !3} |