61 lines
1.8 KiB
LLVM
61 lines
1.8 KiB
LLVM
; -stats requires asserts
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; REQUIRES: asserts
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; RUN: opt -S -passes=wholeprogramdevirt -whole-program-visibility -pass-remarks=wholeprogramdevirt -stats %s 2>&1 | FileCheck %s
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target datalayout = "e-p:64:64"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: remark: {{.*}} unique-ret-val: devirtualized a call to vf0
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; CHECK: remark: {{.*}} unique-ret-val: devirtualized a call to vf0
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; CHECK: remark: {{.*}} devirtualized vf0
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; CHECK: remark: {{.*}} devirtualized vf1
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@vt1 = constant [1 x ptr] [ptr @vf0], !type !0
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@vt2 = constant [1 x ptr] [ptr @vf0], !type !0, !type !1
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@vt3 = constant [1 x ptr] [ptr @vf1], !type !0, !type !1
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@vt4 = constant [1 x ptr] [ptr @vf1], !type !1
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define i1 @vf0(ptr %this) readnone {
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ret i1 0
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}
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define i1 @vf1(ptr %this) readnone {
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ret i1 1
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}
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; CHECK: define i1 @call1
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define i1 @call1(ptr %obj) {
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%vtable = load ptr, ptr %obj
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%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid1")
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call void @llvm.assume(i1 %p)
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%fptr = load ptr, ptr %vtable
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; CHECK: [[RES1:%[^ ]*]] = icmp eq ptr %vtable, @vt3
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%result = call i1 %fptr(ptr %obj)
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; CHECK: ret i1 [[RES1]]
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ret i1 %result
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}
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; CHECK: define i32 @call2
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define i32 @call2(ptr %obj) {
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%vtable = load ptr, ptr %obj
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%p = call i1 @llvm.type.test(ptr %vtable, metadata !"typeid2")
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call void @llvm.assume(i1 %p)
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%fptr = load ptr, ptr %vtable
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; Intentional type mismatch to test zero extend.
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; CHECK: [[RES2:%[^ ]*]] = icmp ne ptr %vtable, @vt2
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%result = call i32 %fptr(ptr %obj)
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; CHECK: [[ZEXT2:%[^ ]*]] = zext i1 [[RES2]] to i32
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; CHECK: ret i32 [[ZEXT2:%[^ ]*]]
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ret i32 %result
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}
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declare i1 @llvm.type.test(ptr, metadata)
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declare void @llvm.assume(i1)
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!0 = !{i32 0, !"typeid1"}
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!1 = !{i32 0, !"typeid2"}
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; CHECK: 2 wholeprogramdevirt - Number of whole program devirtualization targets
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; CHECK: 2 wholeprogramdevirt - Number of unique return value optimizations
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