mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2025-02-01 05:01:59 +01:00
216a9fc9a1
Summary: The symbols use the processor-specific SHN_AMDGPU_LDS section index introduced with a previous change. The linker is then expected to resolve relocations, which are also emitted. Initially disabled for HSA and PAL environments until they have caught up in terms of linker and runtime loader. Some notes: - The llvm.amdgcn.groupstaticsize intrinsics can no longer be lowered to a constant at compile times, which means some tests can no longer be applied. The current "solution" is a terrible hack, but the intrinsic isn't used by Mesa, so we can keep it for now. - We no longer know the full LDS size per kernel at compile time, which means that we can no longer generate a relevant error message at compile time. It would be possible to add a check for the size of individual variables, but ultimately the linker will have to perform the final check. Change-Id: If66dbf33fccfbf3609aefefa2558ac0850d42275 Reviewers: arsenm, rampitec, t-tye, b-sumner, jsjodin Subscribers: qcolombet, kzhuravl, jvesely, wdng, yaxunl, dstuttard, tpr, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D61494 llvm-svn: 364297
64 lines
2.3 KiB
LLVM
64 lines
2.3 KiB
LLVM
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 -verify-machineinstrs -show-mc-encoding < %s | FileCheck -check-prefixes=GCN %s
|
|
; RUN: llc -mtriple=amdgcn-mesa-mesa3d -mcpu=gfx900 -filetype=obj < %s | llvm-readobj -r -t | FileCheck -check-prefixes=ELF %s
|
|
|
|
@lds.external = external unnamed_addr addrspace(3) global [0 x i32]
|
|
@lds.defined = unnamed_addr addrspace(3) global [8 x i32] undef, align 8
|
|
|
|
; ELF: Relocations [
|
|
; ELF-NEXT: Section (3) .rel.text {
|
|
; ELF-NEXT: 0x{{[0-9a-f]*}} R_AMDGPU_ABS32 lds.external 0x0
|
|
; ELF-NEXT: 0x{{[0-9a-f]*}} R_AMDGPU_ABS32 lds.defined 0x0
|
|
; ELF-NEXT: }
|
|
; ELF-NEXT: ]
|
|
|
|
; ELF: Symbol {
|
|
; ELF: Name: lds.defined
|
|
; ELF-NEXT: Value: 0x8
|
|
; ELF-NEXT: Size: 32
|
|
; ELF-NEXT: Binding: Global (0x1)
|
|
; ELF-NEXT: Type: Object (0x1)
|
|
; ELF-NEXT: Other: 0
|
|
; ELF-NEXT: Section: Processor Specific (0xFF00)
|
|
; ELF-NEXT: }
|
|
|
|
; ELF: Symbol {
|
|
; ELF: Name: lds.external
|
|
; ELF-NEXT: Value: 0x4
|
|
; ELF-NEXT: Size: 0
|
|
; ELF-NEXT: Binding: Global (0x1)
|
|
; ELF-NEXT: Type: Object (0x1)
|
|
; ELF-NEXT: Other: 0
|
|
; ELF-NEXT: Section: Processor Specific (0xFF00)
|
|
; ELF-NEXT: }
|
|
|
|
; GCN-LABEL: {{^}}test_basic:
|
|
; GCN: v_mov_b32_e32 v1, lds.external@abs32@lo ; encoding: [0xff,0x02,0x02,0x7e,A,A,A,A]
|
|
; GCN-NEXT: ; fixup A - offset: 4, value: lds.external@abs32@lo, kind: FK_Data_4{{$}}
|
|
;
|
|
; GCN: s_add_i32 s0, lds.defined@abs32@lo, s0 ; encoding: [0xff,0x00,0x00,0x81,A,A,A,A]
|
|
; GCN-NEXT: ; fixup A - offset: 4, value: lds.defined@abs32@lo, kind: FK_Data_4{{$}}
|
|
;
|
|
; GCN: .globl lds.external
|
|
; GCN: .amdgpu_lds lds.external, 0, 4
|
|
; GCN: .globl lds.defined
|
|
; GCN: .amdgpu_lds lds.defined, 32, 8
|
|
define amdgpu_gs float @test_basic(i32 inreg %wave, i32 %arg1) #0 {
|
|
main_body:
|
|
%gep0 = getelementptr [0 x i32], [0 x i32] addrspace(3)* @lds.external, i32 0, i32 %arg1
|
|
%tmp = load i32, i32 addrspace(3)* %gep0
|
|
|
|
%mask = call i64 @llvm.amdgcn.icmp.i64.i32(i32 %tmp, i32 0, i32 0)
|
|
%mask.32 = trunc i64 %mask to i32
|
|
%gep1 = getelementptr [8 x i32], [8 x i32] addrspace(3)* @lds.defined, i32 0, i32 %wave
|
|
store i32 %mask.32, i32 addrspace(3)* %gep1
|
|
|
|
%r = bitcast i32 %tmp to float
|
|
ret float %r
|
|
}
|
|
|
|
; Function Attrs: convergent nounwind readnone
|
|
declare i64 @llvm.amdgcn.icmp.i64.i32(i32, i32, i32) #4
|
|
|
|
attributes #0 = { "no-signed-zeros-fp-math"="true" }
|
|
attributes #4 = { convergent nounwind readnone }
|