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AMDGPU: Emit error if too much LDS is used 

llvm-svn: 267922
This commit is contained in:
Matt Arsenault 2016-04-28 19:37:35 +00:00
parent 156f4ee1c0
commit 1c4d0efe56
3 changed files with 22 additions and 3 deletions
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5
llvm/lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp
View File

@ -504,6 +504,11 @@ void AMDGPUAsmPrinter::getSIProgramInfo(SIProgramInfo &ProgInfo,
Ctx.emitError("too many user SGPRs used");
}
if (MFI->LDSSize > static_cast<unsigned>(STM.getLocalMemorySize())) {
LLVMContext &Ctx = MF.getFunction()->getContext();
Ctx.emitError("LDS size exceeds device maximum");
}
ProgInfo.VGPRBlocks = (ProgInfo.NumVGPR - 1) / 4;
ProgInfo.SGPRBlocks = (ProgInfo.NumSGPR - 1) / 8;
// Set the value to initialize FP_ROUND and FP_DENORM parts of the mode

6
llvm/test/CodeGen/AMDGPU/32-bit-local-address-space.ll
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@ -1,4 +1,4 @@
; RUN: llc -march=amdgcn -mcpu=verde -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=bonaire -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; RUN: llc -march=amdgcn -mcpu=tonga -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s
; On Southern Islands GPUs the local address space(3) uses 32-bit pointers and
@ -91,12 +91,12 @@ define void @infer_ptr_alignment_global_offset(float addrspace(1)* %out, i32 %ti
@ptr = addrspace(3) global i32 addrspace(3)* undef
@dst = addrspace(3) global [16384 x i32] undef
@dst = addrspace(3) global [16383 x i32] undef
; FUNC-LABEL: {{^}}global_ptr:
; SI: ds_write_b32
define void @global_ptr() nounwind {
store i32 addrspace(3)* getelementptr ([16384 x i32], [16384 x i32] addrspace(3)* @dst, i32 0, i32 16), i32 addrspace(3)* addrspace(3)* @ptr
store i32 addrspace(3)* getelementptr ([16383 x i32], [16383 x i32] addrspace(3)* @dst, i32 0, i32 16), i32 addrspace(3)* addrspace(3)* @ptr
ret void
}

14
llvm/test/CodeGen/AMDGPU/over-max-lds-size.ll Normal file
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@ -0,0 +1,14 @@
; RUN: not llc -march=amdgcn -mcpu=tahiti < %s 2>&1 | FileCheck -check-prefix=ERROR %s
; RUN: not llc -march=amdgcn -mcpu=hawaii < %s 2>&1 | FileCheck -check-prefix=ERROR %s
; RUN: not llc -march=amdgcn -mcpu=fiji < %s 2>&1 | FileCheck -check-prefix=ERROR %s
; ERROR: error: LDS size exceeds device maximum
@huge = internal unnamed_addr addrspace(3) global [100000 x i32] undef, align 4
define void @promote_alloca_size_256() {
entry:
%v0 = getelementptr inbounds [100000 x i32], [100000 x i32] addrspace(3)* @huge, i32 0, i32 0
store i32 0, i32 addrspace(3)* %v0
ret void
}