diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp | 20 |
1 files changed, 12 insertions, 8 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp b/llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp index 2ba3156..9dd64e0 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUAttributor.cpp @@ -131,10 +131,8 @@ static bool isDSAddress(const Constant *C) { return AS == AMDGPUAS::LOCAL_ADDRESS || AS == AMDGPUAS::REGION_ADDRESS; } -/// Returns true if the function requires the implicit argument be passed -/// regardless of the function contents. -static bool funcRequiresHostcallPtr(const Function &F) { - // Sanitizers require the hostcall buffer passed in the implicit arguments. +/// Returns true if sanitizer attributes are present on a function. +static bool hasSanitizerAttributes(const Function &F) { return F.hasFnAttribute(Attribute::SanitizeAddress) || F.hasFnAttribute(Attribute::SanitizeThread) || F.hasFnAttribute(Attribute::SanitizeMemory) || @@ -469,15 +467,21 @@ struct AAAMDAttributesFunction : public AAAMDAttributes { // If the function requires the implicit arg pointer due to sanitizers, // assume it's needed even if explicitly marked as not requiring it. - const bool NeedsHostcall = funcRequiresHostcallPtr(*F); - if (NeedsHostcall) { + // Flat scratch initialization is needed because `asan_malloc_impl` + // calls introduced later in pipeline will have flat scratch accesses. + // FIXME: FLAT_SCRATCH_INIT will not be required here if device-libs + // implementation for `asan_malloc_impl` is updated. + const bool HasSanitizerAttrs = hasSanitizerAttributes(*F); + if (HasSanitizerAttrs) { removeAssumedBits(IMPLICIT_ARG_PTR); removeAssumedBits(HOSTCALL_PTR); + removeAssumedBits(FLAT_SCRATCH_INIT); } for (auto Attr : ImplicitAttrs) { - if (NeedsHostcall && - (Attr.first == IMPLICIT_ARG_PTR || Attr.first == HOSTCALL_PTR)) + if (HasSanitizerAttrs && + (Attr.first == IMPLICIT_ARG_PTR || Attr.first == HOSTCALL_PTR || + Attr.first == FLAT_SCRATCH_INIT)) continue; if (F->hasFnAttribute(Attr.second)) |