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llvm-project/llvm/test/Transforms/WholeProgramDevirt/virtual-const-prop-check.ll

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Restore "[LTO/WPD] Enable aggressive WPD under LTO option" This restores 59733525d37cf9ad88b5021b33ecdbaf2e18911c (D71913), along with bot fix 19c76989bb505c3117730c47df85fd3800ea2767. The bot failure should be fixed by D73418, committed as af954e441a5170a75687699d91d85e0692929d43. I also added a fix for non-x86 bot failures by requiring x86 in new test lld/test/ELF/lto/devirt_vcall_vis_public.ll.
2020-01-25 04:24:18 +08:00
; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt %s 2>&1 | FileCheck %s
[WPD] Provide a way to prevent functions from being devirtualized Differential revision: https://reviews.llvm.org/D75617
2020-03-09 19:05:15 +08:00
; Skipping vf0i1 is identical to setting public LTO visibility. We don't devirtualize vf0i1 and all other
; virtual call targets.
; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf0i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP
; We have two set of call targets {vf0i1, vf1i1} and {vf1i32, vf2i32, vf3i32, vf4i32}.
; The command below prevents both of them from devirtualization.
; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf0i1,vf1i32 %s 2>&1 | FileCheck %s --check-prefix=SKIP-ALL
; Check wildcard
; RUN: opt -S -wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -wholeprogramdevirt-skip=vf?i1 %s 2>&1 | FileCheck %s --check-prefix=SKIP
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
target datalayout = "e-p:64:64"
target triple = "x86_64-unknown-linux-gnu"
; CHECK: remark: <unknown>:0:0: virtual-const-prop: devirtualized a call to vf1i32
; CHECK: remark: <unknown>:0:0: virtual-const-prop-1-bit: devirtualized a call to vf1i1
; CHECK: remark: <unknown>:0:0: virtual-const-prop-1-bit: devirtualized a call to vf0i1
; CHECK: remark: <unknown>:0:0: devirtualized vf0i1
; CHECK: remark: <unknown>:0:0: devirtualized vf1i1
; CHECK: remark: <unknown>:0:0: devirtualized vf1i32
; CHECK: remark: <unknown>:0:0: devirtualized vf2i32
; CHECK: remark: <unknown>:0:0: devirtualized vf3i32
; CHECK: remark: <unknown>:0:0: devirtualized vf4i32
; CHECK-NOT: devirtualized
[WPD] Provide a way to prevent functions from being devirtualized Differential revision: https://reviews.llvm.org/D75617
2020-03-09 19:05:15 +08:00
; SKIP: remark: <unknown>:0:0: virtual-const-prop: devirtualized a call to vf1i32
; SKIP: remark: <unknown>:0:0: devirtualized vf1i32
; SKIP: remark: <unknown>:0:0: devirtualized vf2i32
; SKIP: remark: <unknown>:0:0: devirtualized vf3i32
; SKIP: remark: <unknown>:0:0: devirtualized vf4i32
; SKIP-NOT: devirtualized
; SKIP-ALL-NOT: devirtualized
Revert "Temporarily Revert "Add basic loop fusion pass."" The reversion apparently deleted the test/Transforms directory. Will be re-reverting again. llvm-svn: 358552
2019-04-17 12:52:47 +08:00
; CHECK: [[VT1DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\01\01\00\00\00", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i32 (i8*)* @vf1i32 to i8*)], [0 x i8] zeroinitializer }, section "vt1sec", !type [[T8:![0-9]+]]
@vt1 = constant [3 x i8*] [
i8* bitcast (i1 (i8*)* @vf0i1 to i8*),
i8* bitcast (i1 (i8*)* @vf1i1 to i8*),
i8* bitcast (i32 (i8*)* @vf1i32 to i8*)
], section "vt1sec", !type !0
; CHECK: [[VT2DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\02\02\00\00\00", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i32 (i8*)* @vf2i32 to i8*)], [0 x i8] zeroinitializer }, !type [[T8]]
@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*)
], !type !0
; CHECK: [[VT3DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\01\03\00\00\00", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i32 (i8*)* @vf3i32 to i8*)], [0 x i8] zeroinitializer }, !type [[T8]]
@vt3 = constant [3 x i8*] [
i8* bitcast (i1 (i8*)* @vf0i1 to i8*),
i8* bitcast (i1 (i8*)* @vf1i1 to i8*),
i8* bitcast (i32 (i8*)* @vf3i32 to i8*)
], !type !0
; CHECK: [[VT4DATA:@[^ ]*]] = private constant { [8 x i8], [3 x i8*], [0 x i8] } { [8 x i8] c"\00\00\00\02\04\00\00\00", [3 x i8*] [i8* bitcast (i1 (i8*)* @vf1i1 to i8*), i8* bitcast (i1 (i8*)* @vf0i1 to i8*), i8* bitcast (i32 (i8*)* @vf4i32 to i8*)], [0 x i8] zeroinitializer }, !type [[T8]]
@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*)
], !type !0
; CHECK: @vt5 = {{.*}}, !type [[T0:![0-9]+]]
@vt5 = constant [3 x i8*] [
i8* bitcast (void ()* @__cxa_pure_virtual to i8*),
i8* bitcast (void ()* @__cxa_pure_virtual to i8*),
i8* bitcast (void ()* @__cxa_pure_virtual to i8*)
], !type !0
; CHECK: @vt1 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT1DATA]], i32 0, i32 1)
; CHECK: @vt2 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT2DATA]], i32 0, i32 1)
; CHECK: @vt3 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 x i8] }* [[VT3DATA]], i32 0, i32 1)
; CHECK: @vt4 = alias [3 x i8*], getelementptr inbounds ({ [8 x i8], [3 x i8*], [0 x i8] }, { [8 x i8], [3 x i8*], [0 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*
%pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 0, metadata !"typeid")
%fptr = extractvalue {i8*, i1} %pair, 0
%fptr_casted = bitcast i8* %fptr to i1 (i8*)*
; CHECK: [[VTGEP1:%[^ ]*]] = getelementptr i8, i8* [[VT1]], i32 -5
; 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: [[AND1:%[^ ]*]] = and i1 [[VTCMP1]], true
%p = extractvalue {i8*, i1} %pair, 1
%and = and i1 %result, %p
; CHECK: ret i1 [[AND1]]
ret i1 %and
}
; 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*
%pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 8, metadata !"typeid")
%fptr = extractvalue {i8*, i1} %pair, 0
%fptr_casted = bitcast i8* %fptr to i1 (i8*)*
; CHECK: [[VTGEP2:%[^ ]*]] = getelementptr i8, i8* [[VT2]], i32 -5
; 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: [[AND2:%[^ ]*]] = and i1 [[VTCMP2]], true
%p = extractvalue {i8*, i1} %pair, 1
%and = and i1 %result, %p
; CHECK: ret i1 [[AND2]]
ret i1 %and
}
; 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*
%pair = call {i8*, i1} @llvm.type.checked.load(i8* %vtablei8, i32 16, metadata !"typeid")
%fptr = extractvalue {i8*, i1} %pair, 0
%fptr_casted = bitcast i8* %fptr to i32 (i8*)*
; CHECK: [[VTGEP3:%[^ ]*]] = getelementptr i8, i8* [[VT3]], i32 -4
; 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 {i8*, i1} @llvm.type.checked.load(i8*, i32, metadata)
declare void @llvm.assume(i1)
declare void @__cxa_pure_virtual()
; CHECK: [[T8]] = !{i32 8, !"typeid"}
; CHECK: [[T0]] = !{i32 0, !"typeid"}
!0 = !{i32 0, !"typeid"}