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llvm-project/llvm/test/Analysis/MemorySSA/function-mem-attrs.ll

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[MemorySSA] Reinstate the legacy printer and verifier. Differential Revision: http://reviews.llvm.org/D22058 llvm-svn: 274679
2016-07-07 05:20:47 +08:00
; RUN: opt -basicaa -print-memoryssa -verify-memoryssa -analyze < %s 2>&1 | FileCheck %s
[MemorySSA] Port to new pass manager Add support for the new pass manager to MemorySSA pass. Change MemorySSA to be computed eagerly upon construction. Change MemorySSAWalker to be owned by the MemorySSA object that creates it. Reviewers: dberlin, george.burgess.iv Subscribers: mcrosier, llvm-commits Differential Revision: http://reviews.llvm.org/D19664 llvm-svn: 271432
2016-06-02 05:30:40 +08:00
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
;
; Test that various function attributes give us sane results.
@g = external global i32
declare void @readonlyFunction() readonly
declare void @noattrsFunction()
define void @readonlyAttr() {
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: store i32 0
store i32 0, i32* @g, align 4
%1 = alloca i32, align 4
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: store i32 0
store i32 0, i32* %1, align 4
; CHECK: MemoryUse(1)
; CHECK-NEXT: call void @readonlyFunction()
call void @readonlyFunction()
; CHECK: MemoryUse(1)
; CHECK-NEXT: call void @noattrsFunction() #
; Assume that #N is readonly
call void @noattrsFunction() readonly
; Sanity check that noattrsFunction is otherwise a MemoryDef
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: call void @noattrsFunction()
call void @noattrsFunction()
ret void
}
declare void @argMemOnly(i32*) argmemonly
define void @inaccessableOnlyAttr() {
%1 = alloca i32, align 4
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: store i32 0
store i32 0, i32* %1, align 4
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: store i32 0
store i32 0, i32* @g, align 4
; CHECK: MemoryUse(1)
; CHECK-NEXT: call void @argMemOnly(i32* %1) #
; Assume that #N is readonly
call void @argMemOnly(i32* %1) readonly
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: call void @argMemOnly(i32* %1)
call void @argMemOnly(i32* %1)
ret void
}