[llvm-branch-commits] [llvm] [Attributor] Use more appropriate approach to check flat address space (PR #108713)
Shilei Tian via llvm-branch-commits
llvm-branch-commits at lists.llvm.org
Wed Sep 18 07:28:20 PDT 2024
https://github.com/shiltian updated https://github.com/llvm/llvm-project/pull/108713
>From 02b52beaefab0b63c3c09fd1f84b907b89c0cf7b Mon Sep 17 00:00:00 2001
From: Shilei Tian <i at tianshilei.me>
Date: Thu, 12 Sep 2024 15:25:43 -0400
Subject: [PATCH] [Attributor] Use more appropriate approach to check flat
address space
---
llvm/include/llvm/Transforms/IPO/Attributor.h | 3 ---
.../Transforms/IPO/AttributorAttributes.cpp | 26 ++++++++++++++-----
.../Attributor/address_space_info.ll | 4 ++-
.../test/Transforms/Attributor/nocapture-1.ll | 4 +--
.../Transforms/Attributor/value-simplify.ll | 3 +--
5 files changed, 25 insertions(+), 15 deletions(-)
diff --git a/llvm/include/llvm/Transforms/IPO/Attributor.h b/llvm/include/llvm/Transforms/IPO/Attributor.h
index 921fe945539510..ee7c930f8a26ac 100644
--- a/llvm/include/llvm/Transforms/IPO/Attributor.h
+++ b/llvm/include/llvm/Transforms/IPO/Attributor.h
@@ -6267,9 +6267,6 @@ struct AAAddressSpace : public StateWrapper<BooleanState, AbstractAttribute> {
return (AA->getIdAddr() == &ID);
}
- // No address space which indicates the associated value is dead.
- static const uint32_t NoAddressSpace = ~0U;
-
/// Unique ID (due to the unique address)
static const char ID;
};
diff --git a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
index 217c7cccb5775a..642aeae3c12783 100644
--- a/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
+++ b/llvm/lib/Transforms/IPO/AttributorAttributes.cpp
@@ -12571,8 +12571,19 @@ struct AAAddressSpaceImpl : public AAAddressSpace {
void initialize(Attributor &A) override {
assert(getAssociatedType()->isPtrOrPtrVectorTy() &&
"Associated value is not a pointer");
- if (getAssociatedType()->getPointerAddressSpace())
+
+ unsigned FlatAS = A.getInfoCache().getDL().getFlatAddressSpace();
+ if (FlatAS == DataLayout::AS_INVALID) {
+ indicatePessimisticFixpoint();
+ return;
+ }
+
+ unsigned AS = getAssociatedType()->getPointerAddressSpace();
+ if (AS != FlatAS) {
+ [[maybe_unused]] bool R = takeAddressSpace(AS);
+ assert(R && "The take should happen");
indicateOptimisticFixpoint();
+ }
}
ChangeStatus updateImpl(Attributor &A) override {
@@ -12594,12 +12605,13 @@ struct AAAddressSpaceImpl : public AAAddressSpace {
/// See AbstractAttribute::manifest(...).
ChangeStatus manifest(Attributor &A) override {
- Value *AssociatedValue = &getAssociatedValue();
- Value *OriginalValue = peelAddrspacecast(AssociatedValue);
- if (getAddressSpace() == NoAddressSpace ||
+ if (getAddressSpace() == DataLayout::AS_INVALID ||
getAddressSpace() == getAssociatedType()->getPointerAddressSpace())
return ChangeStatus::UNCHANGED;
+ Value *AssociatedValue = &getAssociatedValue();
+ Value *OriginalValue = peelAddrspacecast(AssociatedValue);
+
PointerType *NewPtrTy =
PointerType::get(getAssociatedType()->getContext(), getAddressSpace());
bool UseOriginalValue =
@@ -12646,17 +12658,17 @@ struct AAAddressSpaceImpl : public AAAddressSpace {
if (!isValidState())
return "addrspace(<invalid>)";
return "addrspace(" +
- (AssumedAddressSpace == NoAddressSpace
+ (AssumedAddressSpace == DataLayout::AS_INVALID
? "none"
: std::to_string(AssumedAddressSpace)) +
")";
}
private:
- uint32_t AssumedAddressSpace = NoAddressSpace;
+ uint32_t AssumedAddressSpace = DataLayout::AS_INVALID;
bool takeAddressSpace(uint32_t AS) {
- if (AssumedAddressSpace == NoAddressSpace) {
+ if (AssumedAddressSpace == DataLayout::AS_INVALID) {
AssumedAddressSpace = AS;
return true;
}
diff --git a/llvm/test/Transforms/Attributor/address_space_info.ll b/llvm/test/Transforms/Attributor/address_space_info.ll
index 73dd93c55b819b..0c8b06ac6666a4 100644
--- a/llvm/test/Transforms/Attributor/address_space_info.ll
+++ b/llvm/test/Transforms/Attributor/address_space_info.ll
@@ -1,5 +1,7 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --check-attributes --check-globals --prefix-filecheck-ir-name true
-; RUN: opt -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefixes=CHECK
+; RUN: opt -mtriple=amdgcn-amd-amdhsa -aa-pipeline=basic-aa -passes=attributor -attributor-manifest-internal -attributor-annotate-decl-cs -S < %s | FileCheck %s --check-prefix=CHECK
+
+; REQUIRES: amdgpu-registered-target
@dst = dso_local addrspace(1) externally_initialized global i32 0, align 4
@g1 = dso_local addrspace(1) externally_initialized global ptr null, align 4
diff --git a/llvm/test/Transforms/Attributor/nocapture-1.ll b/llvm/test/Transforms/Attributor/nocapture-1.ll
index 3401ddfdd7d758..de5f31e470edfc 100644
--- a/llvm/test/Transforms/Attributor/nocapture-1.ll
+++ b/llvm/test/Transforms/Attributor/nocapture-1.ll
@@ -257,7 +257,7 @@ define i32 @nc1_addrspace(ptr %q, ptr addrspace(1) %p, i1 %b) {
; TUNIT-NEXT: [[TMP:%.*]] = addrspacecast ptr addrspace(1) [[P]] to ptr
; TUNIT-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[TMP]], ptr [[Q]]
; TUNIT-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4
-; TUNIT-NEXT: store i32 0, ptr addrspace(1) [[P]], align 4
+; TUNIT-NEXT: store i32 0, ptr [[TMP]], align 4
; TUNIT-NEXT: store ptr [[Q]], ptr @g, align 8
; TUNIT-NEXT: ret i32 [[VAL]]
;
@@ -272,7 +272,7 @@ define i32 @nc1_addrspace(ptr %q, ptr addrspace(1) %p, i1 %b) {
; CGSCC-NEXT: [[TMP:%.*]] = addrspacecast ptr addrspace(1) [[P]] to ptr
; CGSCC-NEXT: [[TMP2:%.*]] = select i1 [[B]], ptr [[TMP]], ptr [[Q]]
; CGSCC-NEXT: [[VAL:%.*]] = load i32, ptr [[TMP2]], align 4
-; CGSCC-NEXT: store i32 0, ptr addrspace(1) [[P]], align 4
+; CGSCC-NEXT: store i32 0, ptr [[TMP]], align 4
; CGSCC-NEXT: store ptr [[Q]], ptr @g, align 8
; CGSCC-NEXT: ret i32 [[VAL]]
;
diff --git a/llvm/test/Transforms/Attributor/value-simplify.ll b/llvm/test/Transforms/Attributor/value-simplify.ll
index 68f179c88116e4..a5789790cc92a1 100644
--- a/llvm/test/Transforms/Attributor/value-simplify.ll
+++ b/llvm/test/Transforms/Attributor/value-simplify.ll
@@ -838,8 +838,7 @@ define void @user() {
; TUNIT: Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(write)
; TUNIT-LABEL: define {{[^@]+}}@user
; TUNIT-SAME: () #[[ATTR5]] {
-; TUNIT-NEXT: [[TMP1:%.*]] = addrspacecast ptr addrspacecast (ptr addrspace(3) @ConstAS3Ptr to ptr) to ptr addrspace(3)
-; TUNIT-NEXT: store i32 0, ptr addrspace(3) [[TMP1]], align 4
+; TUNIT-NEXT: store i32 0, ptr addrspacecast (ptr addrspace(3) @ConstAS3Ptr to ptr), align 4
; TUNIT-NEXT: ret void
;
; CGSCC: Function Attrs: mustprogress nofree nosync nounwind willreturn memory(write)
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