+
+; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i64:
+; SI: s_load_dwordx2 s{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}}, s{{\[[0-9]+:[0-9]+\]}}, {{0xb|0x2c}}
+; SI-DAG: v_cmp_eq_i32_e64 vcc, 0, s[[HI]]
+; SI-DAG: s_flbit_i32_b32 [[FFBH_LO:s[0-9]+]], s[[LO]]
+; SI-DAG: s_add_i32 [[ADD:s[0-9]+]], [[FFBH_LO]], 32
+; SI-DAG: s_flbit_i32_b32 [[FFBH_HI:s[0-9]+]], s[[HI]]
+; SI-DAG: v_mov_b32_e32 [[VFFBH_LO:v[0-9]+]], [[FFBH_LO]]
+; SI-DAG: v_mov_b32_e32 [[VFFBH_HI:v[0-9]+]], [[FFBH_HI]]
+; SI-DAG: v_cndmask_b32_e32 v[[CTLZ:[0-9]+]], [[VFFBH_HI]], [[VFFBH_LO]]
+; SI-DAG: v_mov_b32_e32 v[[CTLZ_HI:[0-9]+]], 0{{$}}
+; SI: {{buffer|flat}}_store_dwordx2 v{{\[}}[[CTLZ]]:[[CTLZ_HI]]{{\]}}
+define void @s_ctlz_zero_undef_i64(i64 addrspace(1)* noalias %out, i64 %val) nounwind {
+ %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
+ store i64 %ctlz, i64 addrspace(1)* %out
+ ret void
+}
+
+; FUNC-LABEL: {{^}}s_ctlz_zero_undef_i64_trunc:
+define void @s_ctlz_zero_undef_i64_trunc(i32 addrspace(1)* noalias %out, i64 %val) nounwind {
+ %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
+ %trunc = trunc i64 %ctlz to i32
+ store i32 %trunc, i32 addrspace(1)* %out
+ ret void
+}
+
+; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i64:
+; SI: {{buffer|flat}}_load_dwordx2 v{{\[}}[[LO:[0-9]+]]:[[HI:[0-9]+]]{{\]}}
+; SI-DAG: v_cmp_eq_i32_e64 [[CMPHI:s\[[0-9]+:[0-9]+\]]], 0, v[[HI]]
+; SI-DAG: v_ffbh_u32_e32 [[FFBH_LO:v[0-9]+]], v[[LO]]
+; SI-DAG: v_add_i32_e32 [[ADD:v[0-9]+]], vcc, 32, [[FFBH_LO]]
+; SI-DAG: v_ffbh_u32_e32 [[FFBH_HI:v[0-9]+]], v[[HI]]
+; SI-DAG: v_cndmask_b32_e64 v[[CTLZ:[0-9]+]], [[FFBH_HI]], [[FFBH_LO]]
+; SI-DAG: v_mov_b32_e32 v[[CTLZ_HI:[0-9]+]], 0{{$}}
+; SI: {{buffer|flat}}_store_dwordx2 v{{\[}}[[CTLZ]]:[[CTLZ_HI]]{{\]}}
+define void @v_ctlz_zero_undef_i64(i64 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %in) nounwind {
+ %tid = call i32 @llvm.r600.read.tidig.x()
+ %in.gep = getelementptr i64, i64 addrspace(1)* %in, i32 %tid
+ %out.gep = getelementptr i64, i64 addrspace(1)* %out, i32 %tid
+ %val = load i64, i64 addrspace(1)* %in.gep
+ %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
+ store i64 %ctlz, i64 addrspace(1)* %out.gep
+ ret void
+}
+
+; FUNC-LABEL: {{^}}v_ctlz_zero_undef_i64_trunc:
+define void @v_ctlz_zero_undef_i64_trunc(i32 addrspace(1)* noalias %out, i64 addrspace(1)* noalias %in) nounwind {
+ %tid = call i32 @llvm.r600.read.tidig.x()
+ %in.gep = getelementptr i64, i64 addrspace(1)* %in, i32 %tid
+ %out.gep = getelementptr i32, i32 addrspace(1)* %out, i32 %tid
+ %val = load i64, i64 addrspace(1)* %in.gep
+ %ctlz = call i64 @llvm.ctlz.i64(i64 %val, i1 true)
+ %trunc = trunc i64 %ctlz to i32
+ store i32 %trunc, i32 addrspace(1)* %out.gep
+ ret void
+}