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llvm-mirror/test/CodeGen/AMDGPU/bitcast-vector-extract.ll
Matt Arsenault 01d726ce5c IR: Add immarg attribute
This indicates an intrinsic parameter is required to be a constant,
and should not be replaced with a non-constant value.

Add the attribute to all AMDGPU and generic intrinsics that comments
indicate it should apply to. I scanned other target intrinsics, but I
don't see any obvious comments indicating which arguments are intended
to be only immediates.

This breaks one questionable testcase for the autoupgrade. I'm unclear
on whether the autoupgrade is supposed to really handle declarations
which were never valid. The verifier fails because the attributes now
refer to a parameter past the end of the argument list.

llvm-svn: 355981
2019-03-12 21:02:54 +00:00

94 lines
4.0 KiB
LLVM

; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
; RUN: llc -march=amdgcn -mcpu=tonga -mattr=-flat-for-global -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
; The bitcast should be pushed through the bitcasts so the vectors can
; be broken down and the shared components can be CSEd
; GCN-LABEL: {{^}}store_bitcast_constant_v8i32_to_v8f32:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v8i32_to_v8f32(<8 x float> addrspace(1)* %out, <8 x i32> %vec) {
%vec0.bc = bitcast <8 x i32> <i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 8> to <8 x float>
store volatile <8 x float> %vec0.bc, <8 x float> addrspace(1)* %out
%vec1.bc = bitcast <8 x i32> <i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 7, i32 9> to <8 x float>
store volatile <8 x float> %vec1.bc, <8 x float> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}store_bitcast_constant_v4i64_to_v8f32:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v4i64_to_v8f32(<8 x float> addrspace(1)* %out, <4 x i64> %vec) {
%vec0.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 8> to <8 x float>
store volatile <8 x float> %vec0.bc, <8 x float> addrspace(1)* %out
%vec1.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 9> to <8 x float>
store volatile <8 x float> %vec1.bc, <8 x float> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}store_bitcast_constant_v4i64_to_v4f64:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v4i64_to_v4f64(<4 x double> addrspace(1)* %out, <4 x i64> %vec) {
%vec0.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 8> to <4 x double>
store volatile <4 x double> %vec0.bc, <4 x double> addrspace(1)* %out
%vec1.bc = bitcast <4 x i64> <i64 7, i64 7, i64 7, i64 9> to <4 x double>
store volatile <4 x double> %vec1.bc, <4 x double> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}store_bitcast_constant_v8i32_to_v16i16:
; GCN: buffer_store_dwordx4
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
; GCN-NOT: v_mov_b32
; GCN: buffer_store_dwordx4
define amdgpu_kernel void @store_bitcast_constant_v8i32_to_v16i16(<8 x float> addrspace(1)* %out, <16 x i16> %vec) {
%vec0.bc = bitcast <16 x i16> <i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 8> to <8 x float>
store volatile <8 x float> %vec0.bc, <8 x float> addrspace(1)* %out
%vec1.bc = bitcast <16 x i16> <i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 7, i16 9> to <8 x float>
store volatile <8 x float> %vec1.bc, <8 x float> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}store_value_lowered_to_undef_bitcast_source:
; GCN-NOT: store_dword
define amdgpu_kernel void @store_value_lowered_to_undef_bitcast_source(<2 x i32> addrspace(1)* %out, i64 %a, i64 %b) #0 {
%undef = call i64 @llvm.amdgcn.icmp.i64(i64 %a, i64 %b, i32 999) #1
%bc = bitcast i64 %undef to <2 x i32>
store volatile <2 x i32> %bc, <2 x i32> addrspace(1)* %out
ret void
}
; GCN-LABEL: {{^}}store_value_lowered_to_undef_bitcast_source_extractelt:
; GCN-NOT: store_dword
define amdgpu_kernel void @store_value_lowered_to_undef_bitcast_source_extractelt(i32 addrspace(1)* %out, i64 %a, i64 %b) #0 {
%undef = call i64 @llvm.amdgcn.icmp.i64(i64 %a, i64 %b, i32 9999) #1
%bc = bitcast i64 %undef to <2 x i32>
%elt1 = extractelement <2 x i32> %bc, i32 1
store volatile i32 %elt1, i32 addrspace(1)* %out
ret void
}
declare i64 @llvm.amdgcn.icmp.i64(i64, i64, i32) #1
attributes #0 = { nounwind }
attributes #1 = { nounwind readnone convergent }