managed-memory-rewrite-malloc-free-inside-constexpr.ll
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; RUN: opt %loadPolly -polly-scops \
; RUN: -analyze < %s | FileCheck %s --check-prefix=SCOP
; RUN: opt %loadPolly -polly-codegen-ppcg \
; RUN: -S -polly-acc-codegen-managed-memory \
; RUN: -polly-acc-rewrite-managed-memory < %s | FileCheck %s --check-prefix=HOST-IR
;
; REQUIRES: pollyacc
;
; Check that we can correctly rewrite `malloc` to `polly_mallocManaged`, and
; `free` to `polly_freeManaged` with the `polly-acc-rewrite-managed-memory`
; pass, even inside `constantExpr`. This is necessary because a cookie cutter
; Inst->replaceUsesOfWith(...) call does not actually work, because this does
; not replace the instruction within a ConstantExpr.
;
; #include <memory.h>
;
; static const int N = 100;
; int* f(int *ToFree) {
; free(ToFree);
; int *A = (int *)malloc(sizeof(int) * N);
; for(int i = 0; i < N; i++) {
; A[i] = 42;
; }
; return A;
;
; }
; SCOP: Function: f
; SCOP-NEXT: Region: %for.body---%for.end
; SCOP-NEXT: Max Loop Depth: 1
; SCOP: Arrays {
; SCOP-NEXT: i32 MemRef_tmp[*]; // Element size 4
; SCOP-NEXT: }
; // Check that polly_mallocManaged is declared and used correctly.
; HOST-IR: %1 = bitcast i8* (i64)* @polly_mallocManaged to i32* (i64)*
; HOST-IR: declare i8* @polly_mallocManaged(i64)
; // Check that polly_freeManaged is declared and used correctly.
; HOST-IR call void @polly_freeManaged(i8* %toFree)
; HOST-IR: declare void @polly_freeManaged(i8*)
; // Check that we remove the original malloc,free
; HOST-IR-NOT: declare i8* @malloc(i64)
; HOST-IR-NOT: declare void @free(i8*)
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.12.0"
define i32* @f(i32 *%toFree) {
entry:
; Free inside bitcast
call void bitcast (void (i8*)* @free to void (i32 *)*) (i32 * %toFree)
br label %entry.split
entry.split: ; preds = %entry
; malloc inside bitcast.
%tmp = call i32* bitcast (i8* (i64)* @malloc to i32* (i64)*) (i64 400)
br label %for.body
for.body: ; preds = %entry.split, %for.body
%indvars.iv1 = phi i64 [ 0, %entry.split ], [ %indvars.iv.next, %for.body ]
%arrayidx = getelementptr inbounds i32, i32* %tmp, i64 %indvars.iv1
store i32 42, i32* %arrayidx, align 4, !tbaa !3
%indvars.iv.next = add nuw nsw i64 %indvars.iv1, 1
%exitcond = icmp eq i64 %indvars.iv.next, 100
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret i32* %tmp
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #0
declare i8* @malloc(i64)
declare void @free(i8*)
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #0
attributes #0 = { argmemonly nounwind }
!llvm.module.flags = !{!0, !1}
!llvm.ident = !{!2}
!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 7, !"PIC Level", i32 2}
!2 = !{!"clang version 6.0.0"}
!3 = !{!4, !4, i64 0}
!4 = !{!"int", !5, i64 0}
!5 = !{!"omnipotent char", !6, i64 0}
!6 = !{!"Simple C/C++ TBAA"}