mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-22 04:22:57 +02:00
34d57039a9
If a range has a lower bound of 0, add an AssertZext from the nearest floor power of two. This allows operations with some workitem intrinsics with known maximum ranges to use fast 24-bit multiplies. llvm-svn: 260109
47 lines
1.5 KiB
LLVM
47 lines
1.5 KiB
LLVM
; RUN: llc -march=amdgcn -mtriple=amdgcn-unknown-amdhsa < %s | FileCheck %s
|
|
; RUN: llc -march=amdgcn -mtriple=amdgcn-unknown-unknown < %s | FileCheck %s
|
|
|
|
; and can be eliminated
|
|
; CHECK-LABEL: {{^}}test_workitem_id_x_known_max_range:
|
|
; CHECK-NOT: v0
|
|
; CHECK: {{flat|buffer}}_store_dword v0
|
|
define void @test_workitem_id_x_known_max_range(i32 addrspace(1)* nocapture %out) #0 {
|
|
entry:
|
|
%id = tail call i32 @llvm.amdgcn.workitem.id.x(), !range !0
|
|
%and = and i32 %id, 1023
|
|
store i32 %and, i32 addrspace(1)* %out, align 4
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: {{^}}test_workitem_id_x_known_trunc_1_bit_range:
|
|
; CHECK: v_and_b32_e32 [[MASKED:v[0-9]+]], 0x1ff, v0
|
|
; CHECK: {{flat|buffer}}_store_dword [[MASKED]]
|
|
define void @test_workitem_id_x_known_trunc_1_bit_range(i32 addrspace(1)* nocapture %out) #0 {
|
|
entry:
|
|
%id = tail call i32 @llvm.amdgcn.workitem.id.x(), !range !0
|
|
%and = and i32 %id, 511
|
|
store i32 %and, i32 addrspace(1)* %out, align 4
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: {{^}}test_workitem_id_x_known_max_range_m1:
|
|
; CHECK-NOT: v0
|
|
; CHECK: v_and_b32_e32 [[MASKED:v[0-9]+]], 0xff, v0
|
|
; CHECK: {{flat|buffer}}_store_dword [[MASKED]]
|
|
define void @test_workitem_id_x_known_max_range_m1(i32 addrspace(1)* nocapture %out) #0 {
|
|
entry:
|
|
%id = tail call i32 @llvm.amdgcn.workitem.id.x(), !range !1
|
|
%and = and i32 %id, 255
|
|
store i32 %and, i32 addrspace(1)* %out, align 4
|
|
ret void
|
|
}
|
|
|
|
|
|
declare i32 @llvm.amdgcn.workitem.id.x() #1
|
|
|
|
attributes #0 = { norecurse nounwind }
|
|
attributes #1 = { nounwind readnone }
|
|
|
|
!0 = !{i32 0, i32 1024}
|
|
!1 = !{i32 0, i32 1023}
|