2 files changed, 11 insertions, 5 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp b/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
index aa5ebae2d9f..1a0f37ea2d8 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
+++ b/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.cpp
@@ -38,7 +38,8 @@ void AMDGPUAAWrapperPass::getAnalysisUsage(AnalysisUsage &AU) const {
 }
 
 // Must match the table in getAliasResult.
-AMDGPUAAResult::ASAliasRulesTy::ASAliasRulesTy(AMDGPUAS AS_) : AS(AS_) {
+AMDGPUAAResult::ASAliasRulesTy::ASAliasRulesTy(AMDGPUAS AS_, Triple::ArchType Arch_)
+  : Arch(Arch_), AS(AS_) {
   // These arrarys are indexed by address space value
   // enum elements 0 ... to 5
   static const AliasResult ASAliasRulesPrivIsZero[6][6] = {
@@ -80,8 +81,12 @@ AMDGPUAAResult::ASAliasRulesTy::ASAliasRulesTy(AMDGPUAS AS_) : AS(AS_) {
 
 AliasResult AMDGPUAAResult::ASAliasRulesTy::getAliasResult(unsigned AS1,
     unsigned AS2) const {
-  if (AS1 > AS.MAX_COMMON_ADDRESS || AS2 > AS.MAX_COMMON_ADDRESS)
-    report_fatal_error("Pointer address space out of range");
+  if (AS1 > AS.MAX_COMMON_ADDRESS || AS2 > AS.MAX_COMMON_ADDRESS) {
+    if (Arch == Triple::amdgcn)
+      report_fatal_error("Pointer address space out of range");
+    return AS1 == AS2 ? MayAlias : NoAlias;
+  }
+
   return (*ASAliasRules)[AS1][AS2];
 }
 
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.h b/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.h
index f73aa47cb93..5f8ed9b1f9a 100644
--- a/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.h
+++ b/llvm/lib/Target/AMDGPU/AMDGPUAliasAnalysis.h
@@ -30,7 +30,7 @@ class AMDGPUAAResult : public AAResultBase<AMDGPUAAResult> {
 
 public:
   explicit AMDGPUAAResult(const DataLayout &DL, Triple T) : AAResultBase(),
-    DL(DL), AS(AMDGPU::getAMDGPUAS(T)), ASAliasRules(AS) {}
+    DL(DL), AS(AMDGPU::getAMDGPUAS(T)), ASAliasRules(AS, T.getArch()) {}
   AMDGPUAAResult(AMDGPUAAResult &&Arg)
       : AAResultBase(std::move(Arg)), DL(Arg.DL), AS(Arg.AS),
         ASAliasRules(Arg.ASAliasRules){}
@@ -49,9 +49,10 @@ private:
 
   class ASAliasRulesTy {
   public:
-    ASAliasRulesTy(AMDGPUAS AS_);
+    ASAliasRulesTy(AMDGPUAS AS_, Triple::ArchType Arch_);
     AliasResult getAliasResult(unsigned AS1, unsigned AS2) const;
   private:
+    Triple::ArchType Arch;
     AMDGPUAS AS;
     const AliasResult (*ASAliasRules)[6][6];
   } ASAliasRules;