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https://github.com/RPCS3/llvm.git
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b443a0aeac
This adds minimalistic support for PHI nodes to llvm.objectsize() evaluation fingers crossed so that it does break clang boostrap again.. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176408 91177308-0d34-0410-b5e6-96231b3b80d8
387 lines
11 KiB
LLVM
387 lines
11 KiB
LLVM
; Test a pile of objectsize bounds checking.
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; RUN: opt < %s -instcombine -S | FileCheck %s
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; We need target data to get the sizes of the arrays and structures.
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
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@a = private global [60 x i8] zeroinitializer, align 1 ; <[60 x i8]*>
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@.str = private constant [8 x i8] c"abcdefg\00" ; <[8 x i8]*>
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define i32 @foo() nounwind {
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; CHECK: @foo
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; CHECK-NEXT: ret i32 60
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%1 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
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ret i32 %1
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}
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define i8* @bar() nounwind {
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; CHECK: @bar
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entry:
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%retval = alloca i8*
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%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false)
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%cmp = icmp ne i32 %0, -1
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; CHECK: br i1 true
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br i1 %cmp, label %cond.true, label %cond.false
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cond.true:
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%1 = load i8** %retval
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ret i8* %1
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cond.false:
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%2 = load i8** %retval
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ret i8* %2
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}
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define i32 @f() nounwind {
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; CHECK: @f
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; CHECK-NEXT: ret i32 0
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%1 = call i32 @llvm.objectsize.i32(i8* getelementptr ([60 x i8]* @a, i32 1, i32 0), i1 false)
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ret i32 %1
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}
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@window = external global [0 x i8]
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define i1 @baz() nounwind {
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; CHECK: @baz
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; CHECK-NEXT: objectsize
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%1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false)
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%2 = icmp eq i32 %1, -1
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ret i1 %2
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}
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define void @test1(i8* %q, i32 %x) nounwind noinline {
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; CHECK: @test1
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; CHECK: objectsize.i32
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entry:
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%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false) ; <i64> [#uses=1]
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%1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
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br i1 %1, label %"47", label %"46"
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"46": ; preds = %entry
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unreachable
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"47": ; preds = %entry
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unreachable
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}
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@.str5 = private constant [9 x i32] [i32 97, i32 98, i32 99, i32 100, i32 0, i32
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101, i32 102, i32 103, i32 0], align 4
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define i32 @test2() nounwind {
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; CHECK: @test2
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; CHECK-NEXT: ret i32 34
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%1 = call i32 @llvm.objectsize.i32(i8* getelementptr (i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false)
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ret i32 %1
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}
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; rdar://7674946
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@array = internal global [480 x float] zeroinitializer ; <[480 x float]*> [#uses=1]
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declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
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declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
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declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
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define void @test3() nounwind {
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; CHECK: @test3
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entry:
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br i1 undef, label %bb11, label %bb12
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bb11:
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%0 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
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%1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
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%2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) ; <i32> [#uses=1]
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%3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
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; CHECK: unreachable
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unreachable
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bb12:
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%4 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
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%5 = bitcast float* %4 to i8* ; <i8*> [#uses=1]
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%6 = call i8* @__inline_memcpy_chk(i8* %5, i8* undef, i32 512) nounwind inlinehint ; <i8*> [#uses=0]
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; CHECK: @__inline_memcpy_chk
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unreachable
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}
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; rdar://7718857
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%struct.data = type { [100 x i32], [100 x i32], [1024 x i8] }
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define i32 @test4(i8** %esc) nounwind ssp {
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; CHECK: @test4
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entry:
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%0 = alloca %struct.data, align 8
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%1 = bitcast %struct.data* %0 to i8*
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%2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) nounwind
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; CHECK-NOT: @llvm.objectsize
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; CHECK: @llvm.memset.p0i8.i32(i8* %1, i8 0, i32 1824, i32 8, i1 false)
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%3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
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store i8* %1, i8** %esc
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ret i32 0
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}
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; rdar://7782496
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@s = external global i8*
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define i8* @test5(i32 %n) nounwind ssp {
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; CHECK: @test5
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entry:
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%0 = tail call noalias i8* @malloc(i32 20) nounwind
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%1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false)
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%2 = load i8** @s, align 8
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; CHECK-NOT: @llvm.objectsize
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; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %1, i32 10, i32 1, i1 false)
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%3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 10, i32 %1) nounwind
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ret i8* %0
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}
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define void @test6(i32 %n) nounwind ssp {
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; CHECK: @test6
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entry:
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%0 = tail call noalias i8* @malloc(i32 20) nounwind
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%1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false)
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%2 = load i8** @s, align 8
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; CHECK-NOT: @llvm.objectsize
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; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20)
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%3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 30, i32 %1) nounwind
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ret void
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}
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declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind
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declare noalias i8* @malloc(i32) nounwind
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define i32 @test7(i8** %esc) {
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; CHECK: @test7
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%alloc = call noalias i8* @malloc(i32 48) nounwind
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store i8* %alloc, i8** %esc
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%gep = getelementptr inbounds i8* %alloc, i32 16
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%objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly
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; CHECK: ret i32 32
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ret i32 %objsize
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}
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declare noalias i8* @calloc(i32, i32) nounwind
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define i32 @test8(i8** %esc) {
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; CHECK: @test8
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%alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
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store i8* %alloc, i8** %esc
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%gep = getelementptr inbounds i8* %alloc, i32 5
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%objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly
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; CHECK: ret i32 30
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ret i32 %objsize
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}
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declare noalias i8* @strdup(i8* nocapture) nounwind
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declare noalias i8* @strndup(i8* nocapture, i32) nounwind
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; CHECK: @test9
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define i32 @test9(i8** %esc) {
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%call = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0)) nounwind
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store i8* %call, i8** %esc, align 8
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%1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
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; CHECK: ret i32 8
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ret i32 %1
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}
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; CHECK: @test10
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define i32 @test10(i8** %esc) {
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%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 3) nounwind
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store i8* %call, i8** %esc, align 8
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%1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
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; CHECK: ret i32 4
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ret i32 %1
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}
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; CHECK: @test11
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define i32 @test11(i8** %esc) {
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%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 7) nounwind
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store i8* %call, i8** %esc, align 8
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%1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
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; CHECK: ret i32 8
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ret i32 %1
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}
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; CHECK: @test12
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define i32 @test12(i8** %esc) {
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%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 8) nounwind
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store i8* %call, i8** %esc, align 8
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%1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
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; CHECK: ret i32 8
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ret i32 %1
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}
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; CHECK: @test13
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define i32 @test13(i8** %esc) {
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%call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 57) nounwind
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store i8* %call, i8** %esc, align 8
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%1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
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; CHECK: ret i32 8
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ret i32 %1
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}
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; CHECK: @PR13390
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define i32 @PR13390(i1 %bool, i8* %a) {
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entry:
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%cond = or i1 %bool, true
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br i1 %cond, label %return, label %xpto
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xpto:
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%select = select i1 %bool, i8* %select, i8* %a
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%select2 = select i1 %bool, i8* %a, i8* %select2
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%0 = tail call i32 @llvm.objectsize.i32(i8* %select, i1 true)
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%1 = tail call i32 @llvm.objectsize.i32(i8* %select2, i1 true)
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%2 = add i32 %0, %1
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; CHECK: ret i32 undef
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ret i32 %2
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return:
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ret i32 42
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}
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; CHECK: @PR13621
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define i32 @PR13621(i1 %bool) nounwind {
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entry:
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%cond = or i1 %bool, true
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br i1 %cond, label %return, label %xpto
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; technically reachable, but this malformed IR may appear as a result of constant propagation
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xpto:
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%gep2 = getelementptr i8* %gep, i32 1
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%gep = getelementptr i8* %gep2, i32 1
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%o = call i32 @llvm.objectsize.i32(i8* %gep, i1 true)
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; CHECK: ret i32 undef
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ret i32 %o
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return:
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ret i32 7
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}
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declare noalias i8* @valloc(i32) nounwind
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; CHECK: @test14
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; CHECK: ret i32 6
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define i32 @test14(i32 %a) nounwind {
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switch i32 %a, label %sw.default [
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i32 1, label %sw.bb
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i32 2, label %sw.bb1
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]
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sw.bb:
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%call = tail call noalias i8* @malloc(i32 6) nounwind
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br label %sw.epilog
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sw.bb1:
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%call2 = tail call noalias i8* @calloc(i32 3, i32 2) nounwind
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br label %sw.epilog
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sw.default:
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%call3 = tail call noalias i8* @valloc(i32 6) nounwind
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br label %sw.epilog
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sw.epilog:
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%b.0 = phi i8* [ %call3, %sw.default ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ]
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%1 = tail call i32 @llvm.objectsize.i32(i8* %b.0, i1 false)
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ret i32 %1
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}
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; CHECK: @test15
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; CHECK: llvm.objectsize
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define i32 @test15(i32 %a) nounwind {
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switch i32 %a, label %sw.default [
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i32 1, label %sw.bb
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i32 2, label %sw.bb1
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]
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sw.bb:
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%call = tail call noalias i8* @malloc(i32 3) nounwind
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br label %sw.epilog
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sw.bb1:
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%call2 = tail call noalias i8* @calloc(i32 2, i32 1) nounwind
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br label %sw.epilog
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sw.default:
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%call3 = tail call noalias i8* @valloc(i32 3) nounwind
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br label %sw.epilog
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sw.epilog:
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%b.0 = phi i8* [ %call3, %sw.default ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ]
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%1 = tail call i32 @llvm.objectsize.i32(i8* %b.0, i1 false)
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ret i32 %1
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}
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; CHECK: @test16
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; CHECK: llvm.objectsize
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define i32 @test16(i8* %a, i32 %n) nounwind {
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%b = alloca [5 x i8], align 1
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%c = alloca [5 x i8], align 1
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switch i32 %n, label %sw.default [
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i32 1, label %sw.bb
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i32 2, label %sw.bb1
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]
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sw.bb:
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%bp = bitcast [5 x i8]* %b to i8*
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br label %sw.epilog
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sw.bb1:
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%cp = bitcast [5 x i8]* %c to i8*
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br label %sw.epilog
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sw.default:
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br label %sw.epilog
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sw.epilog:
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%phi = phi i8* [ %a, %sw.default ], [ %cp, %sw.bb1 ], [ %bp, %sw.bb ]
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%sz = call i32 @llvm.objectsize.i32(i8* %phi, i1 false)
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ret i32 %sz
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}
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; CHECK: @test17
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; CHECK: ret i32 5
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define i32 @test17(i32 %n) nounwind {
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%b = alloca [5 x i8], align 1
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%c = alloca [5 x i8], align 1
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%bp = bitcast [5 x i8]* %b to i8*
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switch i32 %n, label %sw.default [
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i32 1, label %sw.bb
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i32 2, label %sw.bb1
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]
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sw.bb:
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br label %sw.epilog
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sw.bb1:
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%cp = bitcast [5 x i8]* %c to i8*
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br label %sw.epilog
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sw.default:
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br label %sw.epilog
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sw.epilog:
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%phi = phi i8* [ %bp, %sw.default ], [ %cp, %sw.bb1 ], [ %bp, %sw.bb ]
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%sz = call i32 @llvm.objectsize.i32(i8* %phi, i1 false)
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ret i32 %sz
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}
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@globalalias = alias internal [60 x i8]* @a
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; CHECK: @test18
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; CHECK-NEXT: ret i32 60
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define i32 @test18() {
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%bc = bitcast [60 x i8]* @globalalias to i8*
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%1 = call i32 @llvm.objectsize.i32(i8* %bc, i1 false)
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ret i32 %1
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}
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@globalalias2 = alias weak [60 x i8]* @a
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; CHECK: @test19
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; CHECK: llvm.objectsize
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define i32 @test19() {
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%bc = bitcast [60 x i8]* @globalalias2 to i8*
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%1 = call i32 @llvm.objectsize.i32(i8* %bc, i1 false)
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ret i32 %1
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}
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