c46aab01c0
This example is not compilable without handling eviction of specific subregisters. Last chance recoloring was deciding it could try evicting an overlapping superregister, which doesn't help make any progress. The LiveIntervalUnion would then assert due to an overlapping / identical range when trying the new assignment. Unfortunately this is also producing a verifier error after the allocation fails. I've seen a number of these, and not sure if we should just start deleting the function on error rather than trying to figure out how to put together valid MIR. I'm not super confident this is the right place to fix this. I also have a number of failing testcases I need to fix by handling partial evictions of superregisters.
27 lines
1.2 KiB
LLVM
27 lines
1.2 KiB
LLVM
; RUN: not llc -march=amdgcn -mcpu=gfx908 -verify-machineinstrs -o - %s 2>%t.err | FileCheck %s
|
|
; RUN: FileCheck -check-prefix=ERR %s < %t.err
|
|
|
|
; ERR: error: inline assembly requires more registers than available
|
|
; ERR: error: inline assembly requires more registers than available
|
|
|
|
%asm.output = type { <16 x i32>, <8 x i32>, <5 x i32>, <4 x i32>, <16 x i32> }
|
|
|
|
; CHECK-LABEL: {{^}}illegal_eviction_assert:
|
|
; CHECK: ; def v[0:15] v[20:27] v[0:4] v[16:19] a[0:15]
|
|
; CHECK: ; clobber
|
|
; CHECK: ; use v[0:15] v[20:27] v[0:4] v[16:19] a[1:16]
|
|
define void @illegal_eviction_assert(<32 x i32> addrspace(1)* %arg) #0 {
|
|
;%agpr0 = call i32 asm sideeffect "; def $0","=${a0}"()
|
|
%asm = call %asm.output asm sideeffect "; def $0 $1 $2 $3 $4","=v,=v,=v,=v,={a[0:15]}"()
|
|
%vgpr0 = extractvalue %asm.output %asm, 0
|
|
%vgpr1 = extractvalue %asm.output %asm, 1
|
|
%vgpr2 = extractvalue %asm.output %asm, 2
|
|
%vgpr3 = extractvalue %asm.output %asm, 3
|
|
%agpr0 = extractvalue %asm.output %asm, 4
|
|
call void asm sideeffect "; clobber", "~{v[0:31]}"()
|
|
call void asm sideeffect "; use $0 $1 $2 $3 $4","v,v,v,v,{a[1:16]}"(<16 x i32> %vgpr0, <8 x i32> %vgpr1, <5 x i32> %vgpr2, <4 x i32> %vgpr3, <16 x i32> %agpr0)
|
|
ret void
|
|
}
|
|
|
|
attributes #0 = { "amdgpu-waves-per-eu"="8,8" }
|