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llvm-project/llvm/test/Transforms/GlobalOpt/invariant.ll

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Add support for invariant.start inside the static constructor evaluator. This is useful to represent a variable that is const in the source but can't be constant in the IR because of a non-trivial constructor. If globalopt evaluates the constructor, and there was an invariant.start with no matching invariant.end possible, it will mark the global constant afterwards. llvm-svn: 150794
2012-02-17 14:59:21 +08:00
; RUN: opt -globalopt -S -o - < %s | FileCheck %s
Check for the correct size in the invariant marker. llvm-svn: 151003
2012-02-21 07:32:26 +08:00
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-S128"
target triple = "x86_64-unknown-linux-gnu"
Add support for invariant.start inside the static constructor evaluator. This is useful to represent a variable that is const in the source but can't be constant in the IR because of a non-trivial constructor. If globalopt evaluates the constructor, and there was an invariant.start with no matching invariant.end possible, it will mark the global constant afterwards. llvm-svn: 150794
2012-02-17 14:59:21 +08:00
declare {}* @llvm.invariant.start(i64 %size, i8* nocapture %ptr)
define void @test1(i8* %ptr) {
Check for the correct size in the invariant marker. llvm-svn: 151003
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call {}* @llvm.invariant.start(i64 4, i8* %ptr)
Add support for invariant.start inside the static constructor evaluator. This is useful to represent a variable that is const in the source but can't be constant in the IR because of a non-trivial constructor. If globalopt evaluates the constructor, and there was an invariant.start with no matching invariant.end possible, it will mark the global constant afterwards. llvm-svn: 150794
2012-02-17 14:59:21 +08:00
ret void
}
@object1 = global i32 0
; CHECK: @object1 = constant i32 -1
define void @ctor1() {
store i32 -1, i32* @object1
%A = bitcast i32* @object1 to i8*
call void @test1(i8* %A)
ret void
}
@object2 = global i32 0
; CHECK: @object2 = global i32 0
define void @ctor2() {
store i32 -1, i32* @object2
%A = bitcast i32* @object2 to i8*
Check for the correct size in the invariant marker. llvm-svn: 151003
2012-02-21 07:32:26 +08:00
%B = call {}* @llvm.invariant.start(i64 4, i8* %A)
Add support for invariant.start inside the static constructor evaluator. This is useful to represent a variable that is const in the source but can't be constant in the IR because of a non-trivial constructor. If globalopt evaluates the constructor, and there was an invariant.start with no matching invariant.end possible, it will mark the global constant afterwards. llvm-svn: 150794
2012-02-17 14:59:21 +08:00
%C = bitcast {}* %B to i8*
ret void
}
Check for the correct size in the invariant marker. llvm-svn: 151003
2012-02-21 07:32:26 +08:00
@object3 = global i32 0
; CHECK: @object3 = global i32 -1
define void @ctor3() {
store i32 -1, i32* @object3
%A = bitcast i32* @object3 to i8*
call {}* @llvm.invariant.start(i64 3, i8* %A)
ret void
}
@object4 = global i32 0
; CHECK: @object4 = global i32 -1
define void @ctor4() {
store i32 -1, i32* @object4
%A = bitcast i32* @object4 to i8*
call {}* @llvm.invariant.start(i64 -1, i8* %A)
ret void
}
Add support for invariant.start inside the static constructor evaluator. This is useful to represent a variable that is const in the source but can't be constant in the IR because of a non-trivial constructor. If globalopt evaluates the constructor, and there was an invariant.start with no matching invariant.end possible, it will mark the global constant afterwards. llvm-svn: 150794
2012-02-17 14:59:21 +08:00
@llvm.global_ctors = appending constant
Check for the correct size in the invariant marker. llvm-svn: 151003
2012-02-21 07:32:26 +08:00
[4 x { i32, void ()* }]
Add support for invariant.start inside the static constructor evaluator. This is useful to represent a variable that is const in the source but can't be constant in the IR because of a non-trivial constructor. If globalopt evaluates the constructor, and there was an invariant.start with no matching invariant.end possible, it will mark the global constant afterwards. llvm-svn: 150794
2012-02-17 14:59:21 +08:00
[ { i32, void ()* } { i32 65535, void ()* @ctor1 },
Check for the correct size in the invariant marker. llvm-svn: 151003
2012-02-21 07:32:26 +08:00
{ i32, void ()* } { i32 65535, void ()* @ctor2 },
{ i32, void ()* } { i32 65535, void ()* @ctor3 },
{ i32, void ()* } { i32 65535, void ()* @ctor4 } ]