mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-24 19:52:54 +01:00
ed0ab9dc76
This patch adds a function attribute, nofree, to indicate that a function does not, directly or indirectly, call a memory-deallocation function (e.g., free, C++'s operator delete). Reviewers: jdoerfert Differential Revision: https://reviews.llvm.org/D49165 llvm-svn: 365336
37 lines
904 B
LLVM
37 lines
904 B
LLVM
; RUN: opt -S -functionattrs < %s | FileCheck %s
|
|
|
|
declare void @f_readonly() readonly
|
|
declare void @f_readnone() readnone
|
|
|
|
define void @test_0(i32* %x) {
|
|
; FunctionAttrs must not infer readonly / readnone for %x
|
|
|
|
; CHECK-LABEL: define void @test_0(i32* %x) #2 {
|
|
entry:
|
|
; CHECK: call void @f_readonly() [ "foo"(i32* %x) ]
|
|
call void @f_readonly() [ "foo"(i32* %x) ]
|
|
ret void
|
|
}
|
|
|
|
define void @test_1(i32* %x) {
|
|
; FunctionAttrs must not infer readonly / readnone for %x
|
|
|
|
; CHECK-LABEL: define void @test_1(i32* %x) #2 {
|
|
entry:
|
|
; CHECK: call void @f_readnone() [ "foo"(i32* %x) ]
|
|
call void @f_readnone() [ "foo"(i32* %x) ]
|
|
ret void
|
|
}
|
|
|
|
define void @test_2(i32* %x) {
|
|
; The "deopt" operand bundle does not capture or write to %x.
|
|
|
|
; CHECK-LABEL: define void @test_2(i32* nocapture readonly %x)
|
|
entry:
|
|
call void @f_readonly() [ "deopt"(i32* %x) ]
|
|
ret void
|
|
}
|
|
|
|
; CHECK: attributes #2 = { nofree }
|
|
|