From 0be4a0e6a4256df2d14a6723723fc73e7a1d30a8 Mon Sep 17 00:00:00 2001 From: Anna Thomas Date: Fri, 22 Jul 2016 17:49:40 +0000 Subject: Invariant start/end intrinsics overloaded for address space Summary: The llvm.invariant.start and llvm.invariant.end intrinsics currently support specifying invariant memory objects only in the default address space. With this change, these intrinsics are overloaded for any adddress space for memory objects and we can use these llvm invariant intrinsics in non-default address spaces. Example: llvm.invariant.start.p1i8(i64 4, i8 addrspace(1)* %ptr) This overloaded intrinsic is needed for representing final or invariant memory in managed languages. Reviewers: apilipenko, reames Subscribers: llvm-commits llvm-svn: 276447 --- llvm/test/Transforms/InstCombine/invariant.ll | 18 +++++++++++++++--- 1 file changed, 15 insertions(+), 3 deletions(-) (limited to 'llvm/test/Transforms/InstCombine/invariant.ll') diff --git a/llvm/test/Transforms/InstCombine/invariant.ll b/llvm/test/Transforms/InstCombine/invariant.ll index 246f9e64041..21e5f0fe858 100644 --- a/llvm/test/Transforms/InstCombine/invariant.ll +++ b/llvm/test/Transforms/InstCombine/invariant.ll @@ -2,15 +2,27 @@ ; RUN: opt < %s -instcombine -S | FileCheck %s declare void @g(i8*) +declare void @g_addr1(i8 addrspace(1)*) -declare {}* @llvm.invariant.start(i64, i8* nocapture) nounwind readonly +declare {}* @llvm.invariant.start.p0i8(i64, i8* nocapture) nounwind readonly +declare {}* @llvm.invariant.start.p1i8(i64, i8 addrspace(1)* nocapture) nounwind readonly define i8 @f() { %a = alloca i8 ; [#uses=4] store i8 0, i8* %a - %i = call {}* @llvm.invariant.start(i64 1, i8* %a) ; <{}*> [#uses=0] - ; CHECK: call {}* @llvm.invariant.start + %i = call {}* @llvm.invariant.start.p0i8(i64 1, i8* %a) ; <{}*> [#uses=0] + ; CHECK: call {}* @llvm.invariant.start.p0i8 call void @g(i8* %a) %r = load i8, i8* %a ; [#uses=1] ret i8 %r } + +; make sure llvm.invariant.call in non-default addrspace are also not eliminated. +define i8 @f_addrspace1(i8 addrspace(1)* %a) { + store i8 0, i8 addrspace(1)* %a + %i = call {}* @llvm.invariant.start.p1i8(i64 1, i8 addrspace(1)* %a) ; <{}*> [#uses=0] + ; CHECK: call {}* @llvm.invariant.start.p1i8 + call void @g_addr1(i8 addrspace(1)* %a) + %r = load i8, i8 addrspace(1)* %a ; [#uses=1] + ret i8 %r +} -- cgit v1.2.3