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change the objectsize intrinsic signature: add a 3rd parameter to denote the maximum runtime performance penalty that the user is willing to accept.

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This commit only adds the parameter. Code taking advantage of it will follow.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@156473 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nuno Lopes
2012-05-09 15:52:43 +00:00
parent 80fa4723b9
commit 30759542aa
13 changed files with 90 additions and 45 deletions
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24
docs/LangRef.html
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@@ -8441,8 +8441,8 @@ LLVM</a>.</p>
<h5>Syntax:</h5> <h5>Syntax:</h5>
<pre> <pre>
declare i32 @llvm.objectsize.i32(i8* &lt;object&gt;, i1 &lt;type&gt;) declare i32 @llvm.objectsize.i32(i8* &lt;object&gt;, i1 &lt;min&gt;, i32 &lt;runtime&gt;)
declare i64 @llvm.objectsize.i64(i8* &lt;object&gt;, i1 &lt;type&gt;) declare i64 @llvm.objectsize.i64(i8* &lt;object&gt;, i1 &lt;min&gt;, i32 &lt;runtime&gt;)
</pre> </pre>
<h5>Overview:</h5> <h5>Overview:</h5>
@@ -8453,17 +8453,21 @@ LLVM</a>.</p>
an allocation of a specific class, structure, array, or other object.</p> an allocation of a specific class, structure, array, or other object.</p>
<h5>Arguments:</h5> <h5>Arguments:</h5>
<p>The <tt>llvm.objectsize</tt> intrinsic takes two arguments. The first <p>The <tt>llvm.objectsize</tt> intrinsic takes three arguments. The first
argument is a pointer to or into the <tt>object</tt>. The second argument argument is a pointer to or into the <tt>object</tt>. The second argument
is a boolean 0 or 1. This argument determines whether you want the is a boolean and determines whether <tt>llvm.objectsize</tt> returns 0 (if true)
maximum (0) or minimum (1) bytes remaining. This needs to be a literal 0 or or -1 (if false) when the object size is unknown.
1, variables are not allowed.</p> The third argument, <tt>runtime</tt>, indicates whether the compiler is allowed
to return a non-constant value. The higher the value, the higher the potential
run-time performance impact.
The second and third arguments only accepts constants.</p>
<h5>Semantics:</h5> <h5>Semantics:</h5>
<p>The <tt>llvm.objectsize</tt> intrinsic is lowered to either a constant <p>The <tt>llvm.objectsize</tt> intrinsic is lowered to a constant representing
representing the size of the object concerned, or <tt>i32/i64 -1 or 0</tt>, the size of the object concerned. If the size cannot be determined at compile
depending on the <tt>type</tt> argument, if the size cannot be determined at time, <tt>llvm.objectsize</tt> either returns <tt>i32/i64 -1 or 0</tt>
compile time.</p> (depending on the <tt>min</tt> argument) if <tt>runtime</tt> is 0, or a run-time
value (if <tt>runtime</tt> &gt; 0 and an expression could be generated).</p>
</div> </div>
<!-- _______________________________________________________________________ --> <!-- _______________________________________________________________________ -->

3
include/llvm/Intrinsics.td
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@@ -268,7 +268,8 @@ def int_sigsetjmp : Intrinsic<[llvm_i32_ty] , [llvm_ptr_ty, llvm_i32_ty]>;
def int_siglongjmp : Intrinsic<[], [llvm_ptr_ty, llvm_i32_ty]>; def int_siglongjmp : Intrinsic<[], [llvm_ptr_ty, llvm_i32_ty]>;
// Internal interface for object size checking // Internal interface for object size checking
def int_objectsize : Intrinsic<[llvm_anyint_ty], [llvm_ptr_ty, llvm_i1_ty], def int_objectsize : Intrinsic<[llvm_anyint_ty],
[llvm_ptr_ty, llvm_i1_ty, llvm_i32_ty],
[IntrNoMem]>, [IntrNoMem]>,
GCCBuiltin<"__builtin_object_size">; GCCBuiltin<"__builtin_object_size">;

26
lib/VMCore/AutoUpgrade.cpp
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@@ -52,6 +52,20 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
} }
break; break;
} }
case 'o': {
// FIXME: remove in LLVM 3.3
if (Name.startswith("objectsize.") && F->arg_size() == 2) {
Type *Tys[] = {F->getReturnType(),
F->arg_begin()->getType(),
Type::getInt1Ty(F->getContext()),
Type::getInt32Ty(F->getContext())};
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::objectsize,
Tys);
NewFn->takeName(F);
return true;
}
break;
}
case 'x': { case 'x': {
if (Name.startswith("x86.sse2.pcmpeq.") || if (Name.startswith("x86.sse2.pcmpeq.") ||
Name.startswith("x86.sse2.pcmpgt.") || Name.startswith("x86.sse2.pcmpgt.") ||
@@ -195,7 +209,7 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
llvm_unreachable("Unknown function for CallInst upgrade."); llvm_unreachable("Unknown function for CallInst upgrade.");
case Intrinsic::ctlz: case Intrinsic::ctlz:
case Intrinsic::cttz: case Intrinsic::cttz: {
assert(CI->getNumArgOperands() == 1 && assert(CI->getNumArgOperands() == 1 &&
"Mismatch between function args and call args"); "Mismatch between function args and call args");
StringRef Name = CI->getName(); StringRef Name = CI->getName();
@@ -205,6 +219,16 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
CI->eraseFromParent(); CI->eraseFromParent();
return; return;
} }
case Intrinsic::objectsize: {
StringRef Name = CI->getName();
CI->setName(Name + ".old");
CI->replaceAllUsesWith(Builder.CreateCall3(NewFn, CI->getArgOperand(0),
CI->getArgOperand(1),
Builder.getInt32(0), Name));
CI->eraseFromParent();
return;
}
}
} }
// This tests each Function to determine if it needs upgrading. When we find // This tests each Function to determine if it needs upgrading. When we find

4
test/CodeGen/ARM/divmod.ll
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@@ -43,7 +43,7 @@ bb:
%3 = load i32* @tabsize, align 4 %3 = load i32* @tabsize, align 4
%4 = srem i32 %cols, %3 %4 = srem i32 %cols, %3
%5 = sdiv i32 %cols, %3 %5 = sdiv i32 %cols, %3
%6 = tail call i32 @llvm.objectsize.i32(i8* null, i1 false) %6 = tail call i32 @llvm.objectsize.i32(i8* null, i1 false, i32 0)
%7 = tail call i8* @__memset_chk(i8* null, i32 9, i32 %5, i32 %6) nounwind %7 = tail call i8* @__memset_chk(i8* null, i32 9, i32 %5, i32 %6) nounwind
br label %bb1 br label %bb1
@@ -54,5 +54,5 @@ bb1:
ret void ret void
} }
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readnone declare i32 @llvm.objectsize.i32(i8*, i1, i32) nounwind readnone
declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind

4
test/CodeGen/Generic/crash.ll
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@@ -23,7 +23,7 @@ bb32: ; preds = %bb6
%3 = load double* %1, align 4 %3 = load double* %1, align 4
%4 = load double* %0, align 4 %4 = load double* %0, align 4
call void @Parse_Vector(double* %0) nounwind call void @Parse_Vector(double* %0) nounwind
%5 = call i32 @llvm.objectsize.i32(i8* undef, i1 false) %5 = call i32 @llvm.objectsize.i32(i8* undef, i1 false, i32 0)
%6 = icmp eq i32 %5, -1 %6 = icmp eq i32 %5, -1
br i1 %6, label %bb34, label %bb33 br i1 %6, label %bb34, label %bb33
@@ -36,7 +36,7 @@ unreachable
} }
declare void @Parse_Vector(double*) declare void @Parse_Vector(double*)
declare i32 @llvm.objectsize.i32(i8*, i1) declare i32 @llvm.objectsize.i32(i8*, i1, i32)
; PR9578 ; PR9578

16
test/CodeGen/Generic/objectsize-upgrade.ll Normal file
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@@ -0,0 +1,16 @@
; RUN: opt < %s -verify -S | FileCheck %s
; check automatic upgrade of objectsize. To be removed in LLVM 3.3.
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"
define i32 @foo() nounwind {
; CHECK: @foo
%1 = alloca i8, align 4
%2 = getelementptr inbounds i8* %1, i32 0
; CHECK: llvm.objectsize.i32(i8* %2, i1 false, i32 0)
%3 = call i32 @llvm.objectsize.i32(i8* %2, i1 0)
ret i32 %3
}
; CHECK: @llvm.objectsize.i32(i8*, i1, i32)
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly

6
test/CodeGen/X86/2011-05-26-UnreachableBlockElim.ll
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@@ -8,7 +8,7 @@ target triple = "x86_64-apple-macosx10.6.0"
@aux_temp = external global %struct.dfa, align 8 @aux_temp = external global %struct.dfa, align 8
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone declare i64 @llvm.objectsize.i64(i8*, i1, i32) nounwind readnone
declare void @__memset_chk() nounwind declare void @__memset_chk() nounwind
@@ -21,12 +21,12 @@ if.end.i: ; preds = %entry
br i1 undef, label %land.end.thread.i, label %land.end.i br i1 undef, label %land.end.thread.i, label %land.end.i
land.end.thread.i: ; preds = %if.end.i land.end.thread.i: ; preds = %if.end.i
%0 = call i64 @llvm.objectsize.i64(i8* undef, i1 false) nounwind %0 = call i64 @llvm.objectsize.i64(i8* undef, i1 false, i32 0) nounwind
%cmp1710.i = icmp eq i64 %0, -1 %cmp1710.i = icmp eq i64 %0, -1
br i1 %cmp1710.i, label %cond.false156.i, label %cond.true138.i br i1 %cmp1710.i, label %cond.false156.i, label %cond.true138.i
land.end.i: ; preds = %if.end.i land.end.i: ; preds = %if.end.i
%1 = call i64 @llvm.objectsize.i64(i8* undef, i1 false) nounwind %1 = call i64 @llvm.objectsize.i64(i8* undef, i1 false, i32 0) nounwind
%cmp17.i = icmp eq i64 %1, -1 %cmp17.i = icmp eq i64 %1, -1
br i1 %cmp17.i, label %cond.false156.i, label %cond.true138.i br i1 %cmp17.i, label %cond.false156.i, label %cond.true138.i

4
test/CodeGen/X86/crash.ll
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@@ -203,7 +203,7 @@ entry:
; <rdar://problem/9187792> ; <rdar://problem/9187792>
define fastcc void @func_61() nounwind sspreq { define fastcc void @func_61() nounwind sspreq {
entry: entry:
%t1 = tail call i64 @llvm.objectsize.i64(i8* undef, i1 false) %t1 = tail call i64 @llvm.objectsize.i64(i8* undef, i1 false, i32 0)
%t2 = icmp eq i64 %t1, -1 %t2 = icmp eq i64 %t1, -1
br i1 %t2, label %bb2, label %bb1 br i1 %t2, label %bb2, label %bb1
@@ -214,7 +214,7 @@ bb2:
ret void ret void
} }
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone declare i64 @llvm.objectsize.i64(i8*, i1, i32) nounwind readnone
; PR10277 ; PR10277
; This test has dead code elimination caused by remat during spilling. ; This test has dead code elimination caused by remat during spilling.

8
test/CodeGen/X86/object-size.ll
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@@ -10,7 +10,7 @@ target triple = "x86_64-apple-darwin10.0"
define void @bar() nounwind ssp { define void @bar() nounwind ssp {
entry: entry:
%tmp = load i8** @p ; <i8*> [#uses=1] %tmp = load i8** @p ; <i8*> [#uses=1]
%0 = call i64 @llvm.objectsize.i64(i8* %tmp, i1 0) ; <i64> [#uses=1] %0 = call i64 @llvm.objectsize.i64(i8* %tmp, i1 0, i32 0) ; <i64> [#uses=1]
%cmp = icmp ne i64 %0, -1 ; <i1> [#uses=1] %cmp = icmp ne i64 %0, -1 ; <i1> [#uses=1]
; X64: movabsq $-1, [[RAX:%r..]] ; X64: movabsq $-1, [[RAX:%r..]]
; X64: cmpq $-1, [[RAX]] ; X64: cmpq $-1, [[RAX]]
@@ -19,7 +19,7 @@ entry:
cond.true: ; preds = %entry cond.true: ; preds = %entry
%tmp1 = load i8** @p ; <i8*> [#uses=1] %tmp1 = load i8** @p ; <i8*> [#uses=1]
%tmp2 = load i8** @p ; <i8*> [#uses=1] %tmp2 = load i8** @p ; <i8*> [#uses=1]
%1 = call i64 @llvm.objectsize.i64(i8* %tmp2, i1 1) ; <i64> [#uses=1] %1 = call i64 @llvm.objectsize.i64(i8* %tmp2, i1 1, i32 0) ; <i64> [#uses=1]
%call = call i8* @__strcpy_chk(i8* %tmp1, i8* getelementptr inbounds ([3 x i8]* @.str, i32 0, i32 0), i64 %1) ssp ; <i8*> [#uses=1] %call = call i8* @__strcpy_chk(i8* %tmp1, i8* getelementptr inbounds ([3 x i8]* @.str, i32 0, i32 0), i64 %1) ssp ; <i8*> [#uses=1]
br label %cond.end br label %cond.end
@@ -33,7 +33,7 @@ cond.end: ; preds = %cond.false, %cond.t
ret void ret void
} }
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readonly declare i64 @llvm.objectsize.i64(i8*, i1, i32) nounwind readonly
declare i8* @__strcpy_chk(i8*, i8*, i64) ssp declare i8* @__strcpy_chk(i8*, i8*, i64) ssp
@@ -47,7 +47,7 @@ entry:
%tmp = load i8** %__dest.addr ; <i8*> [#uses=1] %tmp = load i8** %__dest.addr ; <i8*> [#uses=1]
%tmp1 = load i8** %__src.addr ; <i8*> [#uses=1] %tmp1 = load i8** %__src.addr ; <i8*> [#uses=1]
%tmp2 = load i8** %__dest.addr ; <i8*> [#uses=1] %tmp2 = load i8** %__dest.addr ; <i8*> [#uses=1]
%0 = call i64 @llvm.objectsize.i64(i8* %tmp2, i1 1) ; <i64> [#uses=1] %0 = call i64 @llvm.objectsize.i64(i8* %tmp2, i1 1, i32 0) ; <i64> [#uses=1]
%call = call i8* @__strcpy_chk(i8* %tmp, i8* %tmp1, i64 %0) ssp ; <i8*> [#uses=1] %call = call i8* @__strcpy_chk(i8* %tmp, i8* %tmp1, i64 %0) ssp ; <i8*> [#uses=1]
store i8* %call, i8** %retval store i8* %call, i8** %retval
%1 = load i8** %retval ; <i8*> [#uses=1] %1 = load i8** %retval ; <i8*> [#uses=1]

4
test/CodeGen/X86/unreachable-stack-protector.ll
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@@ -2,13 +2,13 @@
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 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-darwin10.0.0" target triple = "x86_64-apple-darwin10.0.0"
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone declare i64 @llvm.objectsize.i64(i8*, i1, i32) nounwind readnone
define void @test5() nounwind optsize noinline ssp { define void @test5() nounwind optsize noinline ssp {
entry: entry:
; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip) ; CHECK: movq ___stack_chk_guard@GOTPCREL(%rip)
%buf = alloca [64 x i8], align 16 %buf = alloca [64 x i8], align 16
%0 = call i64 @llvm.objectsize.i64(i8* undef, i1 false) %0 = call i64 @llvm.objectsize.i64(i8* undef, i1 false, i32 0)
br i1 false, label %if.end, label %if.then br i1 false, label %if.end, label %if.then
if.then: ; preds = %entry if.then: ; preds = %entry

4
test/Transforms/InstCombine/debuginfo.ll
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@@ -2,7 +2,7 @@
declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone declare void @llvm.dbg.declare(metadata, metadata) nounwind readnone
declare i64 @llvm.objectsize.i64(i8*, i1) nounwind readnone declare i64 @llvm.objectsize.i64(i8*, i1, i32) nounwind readnone
declare i8* @foo(i8*, i32, i64, i64) nounwind declare i8* @foo(i8*, i32, i64, i64) nounwind
@@ -23,7 +23,7 @@ entry:
%tmp1 = load i32* %__val.addr, align 4, !dbg !21, !tbaa !17 %tmp1 = load i32* %__val.addr, align 4, !dbg !21, !tbaa !17
%tmp2 = load i64* %__len.addr, align 8, !dbg !21, !tbaa !19 %tmp2 = load i64* %__len.addr, align 8, !dbg !21, !tbaa !19
%tmp3 = load i8** %__dest.addr, align 8, !dbg !21, !tbaa !13 %tmp3 = load i8** %__dest.addr, align 8, !dbg !21, !tbaa !13
%0 = call i64 @llvm.objectsize.i64(i8* %tmp3, i1 false), !dbg !21 %0 = call i64 @llvm.objectsize.i64(i8* %tmp3, i1 false, i32 0), !dbg !21
%call = call i8* @foo(i8* %tmp, i32 %tmp1, i64 %tmp2, i64 %0), !dbg !21 %call = call i8* @foo(i8* %tmp, i32 %tmp1, i64 %tmp2, i64 %0), !dbg !21
ret i8* %call, !dbg !21 ret i8* %call, !dbg !21
} }

28
test/Transforms/InstCombine/objsize.ll
View File

@@ -9,7 +9,7 @@ target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f3
define i32 @foo() nounwind { define i32 @foo() nounwind {
; CHECK: @foo ; CHECK: @foo
; CHECK-NEXT: ret i32 60 ; CHECK-NEXT: ret i32 60
%1 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false) %1 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false, i32 0)
ret i32 %1 ret i32 %1
} }
@@ -17,7 +17,7 @@ define i8* @bar() nounwind {
; CHECK: @bar ; CHECK: @bar
entry: entry:
%retval = alloca i8* %retval = alloca i8*
%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false) %0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([60 x i8]* @a, i32 0, i32 0), i1 false, i32 0)
%cmp = icmp ne i32 %0, -1 %cmp = icmp ne i32 %0, -1
; CHECK: br i1 true ; CHECK: br i1 true
br i1 %cmp, label %cond.true, label %cond.false br i1 %cmp, label %cond.true, label %cond.false
@@ -34,7 +34,7 @@ cond.false:
define i32 @f() nounwind { define i32 @f() nounwind {
; CHECK: @f ; CHECK: @f
; CHECK-NEXT: ret i32 0 ; CHECK-NEXT: ret i32 0
%1 = call i32 @llvm.objectsize.i32(i8* getelementptr ([60 x i8]* @a, i32 1, i32 0), i1 false) %1 = call i32 @llvm.objectsize.i32(i8* getelementptr ([60 x i8]* @a, i32 1, i32 0), i1 false, i32 0)
ret i32 %1 ret i32 %1
} }
@@ -43,7 +43,7 @@ define i32 @f() nounwind {
define i1 @baz() nounwind { define i1 @baz() nounwind {
; CHECK: @baz ; CHECK: @baz
; CHECK-NEXT: ret i1 true ; CHECK-NEXT: ret i1 true
%1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false) %1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false, i32 0)
%2 = icmp eq i32 %1, -1 %2 = icmp eq i32 %1, -1
ret i1 %2 ret i1 %2
} }
@@ -52,7 +52,7 @@ define void @test1(i8* %q, i32 %x) nounwind noinline {
; CHECK: @test1 ; CHECK: @test1
; CHECK: objectsize.i32 ; CHECK: objectsize.i32
entry: entry:
%0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false) ; <i64> [#uses=1] %0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false, i32 0) ; <i64> [#uses=1]
%1 = icmp eq i32 %0, -1 ; <i1> [#uses=1] %1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
br i1 %1, label %"47", label %"46" br i1 %1, label %"47", label %"46"
@@ -68,7 +68,7 @@ entry:
define i32 @test2() nounwind { define i32 @test2() nounwind {
; CHECK: @test2 ; CHECK: @test2
; CHECK-NEXT: ret i32 34 ; CHECK-NEXT: ret i32 34
%1 = call i32 @llvm.objectsize.i32(i8* getelementptr (i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false) %1 = call i32 @llvm.objectsize.i32(i8* getelementptr (i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false, i32 0)
ret i32 %1 ret i32 %1
} }
@@ -77,7 +77,7 @@ define i32 @test2() nounwind {
declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly declare i32 @llvm.objectsize.i32(i8*, i1, i32) nounwind readonly
declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
@@ -89,7 +89,7 @@ entry:
bb11: bb11:
%0 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1] %0 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
%1 = bitcast float* %0 to i8* ; <i8*> [#uses=1] %1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
%2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) ; <i32> [#uses=1] %2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false, i32 0) ; <i32> [#uses=1]
%3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0] %3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
; CHECK: unreachable ; CHECK: unreachable
unreachable unreachable
@@ -111,7 +111,7 @@ define i32 @test4() nounwind ssp {
entry: entry:
%0 = alloca %struct.data, align 8 %0 = alloca %struct.data, align 8
%1 = bitcast %struct.data* %0 to i8* %1 = bitcast %struct.data* %0 to i8*
%2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) nounwind %2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false, i32 0) nounwind
; CHECK-NOT: @llvm.objectsize ; CHECK-NOT: @llvm.objectsize
; CHECK: @llvm.memset.p0i8.i32(i8* %1, i8 0, i32 1824, i32 8, i1 false) ; CHECK: @llvm.memset.p0i8.i32(i8* %1, i8 0, i32 1824, i32 8, i1 false)
%3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind %3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
@@ -125,7 +125,7 @@ define void @test5(i32 %n) nounwind ssp {
; CHECK: @test5 ; CHECK: @test5
entry: entry:
%0 = tail call noalias i8* @malloc(i32 20) nounwind %0 = tail call noalias i8* @malloc(i32 20) nounwind
%1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false) %1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false, i32 0)
%2 = load i8** @s, align 8 %2 = load i8** @s, align 8
; CHECK-NOT: @llvm.objectsize ; CHECK-NOT: @llvm.objectsize
; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %1, i32 10, i32 1, i1 false) ; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %1, i32 10, i32 1, i1 false)
@@ -137,7 +137,7 @@ define void @test6(i32 %n) nounwind ssp {
; CHECK: @test6 ; CHECK: @test6
entry: entry:
%0 = tail call noalias i8* @malloc(i32 20) nounwind %0 = tail call noalias i8* @malloc(i32 20) nounwind
%1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false) %1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false, i32 0)
%2 = load i8** @s, align 8 %2 = load i8** @s, align 8
; CHECK-NOT: @llvm.objectsize ; CHECK-NOT: @llvm.objectsize
; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20) ; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20)
@@ -153,7 +153,7 @@ define i32 @test7() {
; CHECK: @test7 ; CHECK: @test7
%alloc = call noalias i8* @malloc(i32 48) nounwind %alloc = call noalias i8* @malloc(i32 48) nounwind
%gep = getelementptr inbounds i8* %alloc, i32 16 %gep = getelementptr inbounds i8* %alloc, i32 16
%objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false, i32 0) nounwind readonly
; CHECK-NEXT: ret i32 32 ; CHECK-NEXT: ret i32 32
ret i32 %objsize ret i32 %objsize
} }
@@ -164,7 +164,7 @@ define i32 @test8() {
; CHECK: @test8 ; CHECK: @test8
%alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind %alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
%gep = getelementptr inbounds i8* %alloc, i32 5 %gep = getelementptr inbounds i8* %alloc, i32 5
%objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false, i32 0) nounwind readonly
; CHECK-NEXT: ret i32 30 ; CHECK-NEXT: ret i32 30
ret i32 %objsize ret i32 %objsize
} }
@@ -174,7 +174,7 @@ define i32 @test9() {
; CHECK: @test9 ; CHECK: @test9
%alloc = call noalias i8* @calloc(i32 100000000, i32 100000000) nounwind %alloc = call noalias i8* @calloc(i32 100000000, i32 100000000) nounwind
%gep = getelementptr inbounds i8* %alloc, i32 2 %gep = getelementptr inbounds i8* %alloc, i32 2
%objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 true) nounwind readonly %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 true, i32 0) nounwind readonly
; CHECK-NEXT: ret i32 0 ; CHECK-NEXT: ret i32 0
ret i32 %objsize ret i32 %objsize
} }

4
test/Transforms/SimplifyLibCalls/StrCpy.ll
View File

@@ -11,7 +11,7 @@ declare i8* @strcpy(i8*, i8*)
declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind declare i8* @__strcpy_chk(i8*, i8*, i32) nounwind
declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly declare i32 @llvm.objectsize.i32(i8*, i1, i32) nounwind readonly
; rdar://6839935 ; rdar://6839935
@@ -30,7 +30,7 @@ define i32 @t2() {
%target = alloca [1024 x i8] %target = alloca [1024 x i8]
%arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0 %arg1 = getelementptr [1024 x i8]* %target, i32 0, i32 0
%arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0 %arg2 = getelementptr [6 x i8]* @hello, i32 0, i32 0
%tmp1 = call i32 @llvm.objectsize.i32(i8* %arg1, i1 false) %tmp1 = call i32 @llvm.objectsize.i32(i8* %arg1, i1 false, i32 0)
%rslt1 = call i8* @__strcpy_chk(i8* %arg1, i8* %arg2, i32 %tmp1) %rslt1 = call i8* @__strcpy_chk(i8* %arg1, i8* %arg2, i32 %tmp1)
; CHECK: @__memcpy_chk ; CHECK: @__memcpy_chk
ret i32 0 ret i32 0