mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +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
114 lines
3.5 KiB
LLVM
114 lines
3.5 KiB
LLVM
; RUN: opt < %s -functionattrs -S | FileCheck %s
|
|
; RUN: opt < %s -passes=function-attrs -S | FileCheck %s
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; CHECK: define void @_Z4foo1Pi(i32* nocapture readnone %a) local_unnamed_addr #0 {
|
|
define void @_Z4foo1Pi(i32* nocapture readnone %a) local_unnamed_addr #0 {
|
|
entry:
|
|
tail call void @_Z3extv()
|
|
ret void
|
|
}
|
|
|
|
declare void @_Z3extv() local_unnamed_addr
|
|
|
|
; CHECK: define void @_Z4foo2Pi(i32* nocapture %a) local_unnamed_addr #1 {
|
|
define void @_Z4foo2Pi(i32* nocapture %a) local_unnamed_addr #1 {
|
|
entry:
|
|
%0 = bitcast i32* %a to i8*
|
|
tail call void @free(i8* %0) #2
|
|
ret void
|
|
}
|
|
|
|
declare void @free(i8* nocapture) local_unnamed_addr #2
|
|
|
|
; CHECK: define i32 @_Z4foo3Pi(i32* nocapture readonly %a) local_unnamed_addr #3 {
|
|
define i32 @_Z4foo3Pi(i32* nocapture readonly %a) local_unnamed_addr #3 {
|
|
entry:
|
|
%0 = load i32, i32* %a, align 4
|
|
ret i32 %0
|
|
}
|
|
|
|
; CHECK: define double @_Z4foo4Pd(double* nocapture readonly %a) local_unnamed_addr #1 {
|
|
define double @_Z4foo4Pd(double* nocapture readonly %a) local_unnamed_addr #1 {
|
|
entry:
|
|
%0 = load double, double* %a, align 8
|
|
%call = tail call double @cos(double %0) #2
|
|
ret double %call
|
|
}
|
|
|
|
declare double @cos(double) local_unnamed_addr #2
|
|
|
|
; CHECK: define noalias i32* @_Z4foo5Pm(i64* nocapture readonly %a) local_unnamed_addr #1 {
|
|
define noalias i32* @_Z4foo5Pm(i64* nocapture readonly %a) local_unnamed_addr #1 {
|
|
entry:
|
|
%0 = load i64, i64* %a, align 8
|
|
%call = tail call noalias i8* @malloc(i64 %0) #2
|
|
%1 = bitcast i8* %call to i32*
|
|
ret i32* %1
|
|
}
|
|
|
|
declare noalias i8* @malloc(i64) local_unnamed_addr #2
|
|
|
|
; CHECK: define noalias i64* @_Z4foo6Pm(i64* nocapture %a) local_unnamed_addr #1 {
|
|
define noalias i64* @_Z4foo6Pm(i64* nocapture %a) local_unnamed_addr #1 {
|
|
entry:
|
|
%0 = bitcast i64* %a to i8*
|
|
%1 = load i64, i64* %a, align 8
|
|
%call = tail call i8* @realloc(i8* %0, i64 %1) #2
|
|
%2 = bitcast i8* %call to i64*
|
|
ret i64* %2
|
|
}
|
|
|
|
declare noalias i8* @realloc(i8* nocapture, i64) local_unnamed_addr #2
|
|
|
|
; CHECK: define void @_Z4foo7Pi(i32* %a) local_unnamed_addr #1 {
|
|
define void @_Z4foo7Pi(i32* %a) local_unnamed_addr #1 {
|
|
entry:
|
|
%isnull = icmp eq i32* %a, null
|
|
br i1 %isnull, label %delete.end, label %delete.notnull
|
|
|
|
delete.notnull: ; preds = %entry
|
|
%0 = bitcast i32* %a to i8*
|
|
tail call void @_ZdlPv(i8* %0) #5
|
|
br label %delete.end
|
|
|
|
delete.end: ; preds = %delete.notnull, %entry
|
|
ret void
|
|
}
|
|
|
|
declare void @_ZdlPv(i8*) local_unnamed_addr #4
|
|
|
|
; CHECK: define void @_Z4foo8Pi(i32* %a) local_unnamed_addr #1 {
|
|
define void @_Z4foo8Pi(i32* %a) local_unnamed_addr #1 {
|
|
entry:
|
|
%isnull = icmp eq i32* %a, null
|
|
br i1 %isnull, label %delete.end, label %delete.notnull
|
|
|
|
delete.notnull: ; preds = %entry
|
|
%0 = bitcast i32* %a to i8*
|
|
tail call void @_ZdaPv(i8* %0) #5
|
|
br label %delete.end
|
|
|
|
delete.end: ; preds = %delete.notnull, %entry
|
|
ret void
|
|
}
|
|
|
|
declare void @_ZdaPv(i8*) local_unnamed_addr #4
|
|
|
|
attributes #0 = { uwtable }
|
|
attributes #1 = { nounwind uwtable }
|
|
attributes #2 = { nounwind }
|
|
attributes #3 = { norecurse nounwind readonly uwtable }
|
|
attributes #4 = { nobuiltin nounwind }
|
|
attributes #5 = { builtin nounwind }
|
|
|
|
; CHECK: attributes #0 = { uwtable }
|
|
; CHECK: attributes #1 = { nounwind uwtable }
|
|
; CHECK: attributes #2 = { nounwind }
|
|
; CHECK: attributes #3 = { norecurse nounwind readonly uwtable }
|
|
; CHECK: attributes #4 = { nobuiltin nounwind }
|
|
; CHECK: attributes #5 = { builtin nounwind }
|
|
|