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llvm-mirror/test/CodeGen/AMDGPU/combine-and-sext-bool.ll
Stanislav Mekhanoshin f85be265f1 [AMDGPU] Combine and x, (sext cc from i1) => select cc, x, 0
Also factored out function to check if a boolean is an already
deserialized value which does not require v_cndmask_b32 to be
loaded. Added binary logical operators to its check.

Differential Revision: https://reviews.llvm.org/D34500

llvm-svn: 306439
2017-06-27 18:25:26 +00:00

28 lines
981 B
LLVM

; RUN: llc -march=amdgcn -verify-machineinstrs < %s | FileCheck -check-prefix=GCN %s
; GCN-LABEL: {{^}}and_i1_sext_bool:
; GCN: v_cmp_{{gt|le}}_u32_e{{32|64}} [[CC:[^,]+]], v{{[0-9]+}}, v{{[0-9]+}}
; GCN: v_cndmask_b32_e{{32|64}} [[VAL:v[0-9]+]], 0, v{{[0-9]+}}, [[CC]]
; GCN: store_dword {{.*}}[[VAL]]
; GCN-NOT: v_cndmask_b32_e64 v{{[0-9]+}}, {{0|-1}}, {{0|-1}}
; GCN-NOT: v_and_b32_e32
define amdgpu_kernel void @and_i1_sext_bool(i32 addrspace(1)* nocapture %arg) {
bb:
%x = tail call i32 @llvm.amdgcn.workitem.id.x()
%y = tail call i32 @llvm.amdgcn.workitem.id.y()
%gep = getelementptr inbounds i32, i32 addrspace(1)* %arg, i32 %x
%v = load i32, i32 addrspace(1)* %gep, align 4
%cmp = icmp ugt i32 %x, %y
%ext = sext i1 %cmp to i32
%and = and i32 %v, %ext
store i32 %and, i32 addrspace(1)* %gep, align 4
ret void
}
declare i32 @llvm.amdgcn.workitem.id.x() #0
declare i32 @llvm.amdgcn.workitem.id.y() #0
attributes #0 = { nounwind readnone speculatable }