https://github.com/arsenm created
https://github.com/llvm/llvm-project/pull/102010
None
>From 2dde2add87950b6016cbb1d6c6aa979731378a1b Mon Sep 17 00:00:00 2001
From: Matt Arsenault <matthew.arsena...@amd.com>
Date: Mon, 5 Aug 2024 20:27:07 +0400
Subject: [PATCH] InferAddressSpaces: Handle llvm.is.constant
---
.../Transforms/Scalar/InferAddressSpaces.cpp | 4 ++-
.../InferAddressSpaces/AMDGPU/is.constant.ll | 35 +++++++++++++++++++
2 files changed, 38 insertions(+), 1 deletion(-)
create mode 100644
llvm/test/Transforms/InferAddressSpaces/AMDGPU/is.constant.ll
diff --git a/llvm/lib/Transforms/Scalar/InferAddressSpaces.cpp
b/llvm/lib/Transforms/Scalar/InferAddressSpaces.cpp
index 2ddf24be67702..67d4e7b5ee146 100644
--- a/llvm/lib/Transforms/Scalar/InferAddressSpaces.cpp
+++ b/llvm/lib/Transforms/Scalar/InferAddressSpaces.cpp
@@ -401,7 +401,8 @@ bool
InferAddressSpacesImpl::rewriteIntrinsicOperands(IntrinsicInst *II,
II->setCalledFunction(NewDecl);
return true;
}
- case Intrinsic::prefetch: {
+ case Intrinsic::prefetch:
+ case Intrinsic::is_constant: {
Function *NewDecl =
Intrinsic::getDeclaration(M, II->getIntrinsicID(), {NewV->getType()});
II->setArgOperand(0, NewV);
@@ -426,6 +427,7 @@ void
InferAddressSpacesImpl::collectRewritableIntrinsicOperands(
switch (IID) {
case Intrinsic::ptrmask:
case Intrinsic::objectsize:
+ case Intrinsic::is_constant:
appendsFlatAddressExpressionToPostorderStack(II->getArgOperand(0),
PostorderStack, Visited);
break;
diff --git a/llvm/test/Transforms/InferAddressSpaces/AMDGPU/is.constant.ll
b/llvm/test/Transforms/InferAddressSpaces/AMDGPU/is.constant.ll
new file mode 100644
index 0000000000000..767681a281792
--- /dev/null
+++ b/llvm/test/Transforms/InferAddressSpaces/AMDGPU/is.constant.ll
@@ -0,0 +1,35 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
UTC_ARGS: --version 5
+; RUN: opt -S -mtriple=amdgcn-amd-amdhsa -passes=infer-address-spaces %s |
FileCheck %s
+
+define i1 @is_constant_global_to_flat(ptr addrspace(1) %ptr) {
+; CHECK-LABEL: define i1 @is_constant_global_to_flat(
+; CHECK-SAME: ptr addrspace(1) [[PTR:%.*]]) {
+; CHECK-NEXT: [[RET:%.*]] = call i1 @llvm.is.constant.p1(ptr addrspace(1)
[[PTR]])
+; CHECK-NEXT: ret i1 [[RET]]
+;
+ %cast = addrspacecast ptr addrspace(1) %ptr to ptr
+ %ret = call i1 @llvm.is.constant.p0(ptr %cast)
+ ret i1 %ret
+}
+
+define i1 @is_constant_local_to_flat(ptr addrspace(3) %ptr) {
+; CHECK-LABEL: define i1 @is_constant_local_to_flat(
+; CHECK-SAME: ptr addrspace(3) [[PTR:%.*]]) {
+; CHECK-NEXT: [[RET:%.*]] = call i1 @llvm.is.constant.p3(ptr addrspace(3)
[[PTR]])
+; CHECK-NEXT: ret i1 [[RET]]
+;
+ %cast = addrspacecast ptr addrspace(3) %ptr to ptr
+ %ret = call i1 @llvm.is.constant.p0(ptr %cast)
+ ret i1 %ret
+}
+
+define i1 @is_constant_private_to_flat(ptr addrspace(5) %ptr) {
+; CHECK-LABEL: define i1 @is_constant_private_to_flat(
+; CHECK-SAME: ptr addrspace(5) [[PTR:%.*]]) {
+; CHECK-NEXT: [[RET:%.*]] = call i1 @llvm.is.constant.p5(ptr addrspace(5)
[[PTR]])
+; CHECK-NEXT: ret i1 [[RET]]
+;
+ %cast = addrspacecast ptr addrspace(5) %ptr to ptr
+ %ret = call i1 @llvm.is.constant.p0(ptr %cast)
+ ret i1 %ret
+}
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