Scalar Arithmetic Instructions
239 AMDGPU instructions in this category - showing 100 per page, page 1 of 3 - click any row for encoding, pseudocode, and full documentation.
| Mnemonic | Syntax | Format | Summary |
|---|---|---|---|
| s_abs_i32 | s_abs_i32 | SOP1 | Compute the absolute value of a scalar input, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_absdiff_i32 | s_absdiff_i32 | SOP2 | Calculate the absolute value of difference between two scalar inputs, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_add_co_ci_u32 | s_add_co_ci_u32 | SOP2 | Add two unsigned 32-bit integer inputs and a carry-in bit from SCC, store the result into a scalar register and store the carry-out bit into SCC. |
| s_add_co_i32 | s_add_co_i32 | SOP2 | Add two signed 32-bit integer inputs, store the result into a scalar register and store the carry-out bit into SCC. |
| s_add_co_u32 | s_add_co_u32 | SOP2 | Add two unsigned 32-bit integer inputs, store the result into a scalar register and store the carry-out bit into SCC. |
| s_add_f16 | s_add_f16 | SOP2 | Add two floating point inputs and store the result into a scalar register. |
| s_add_f32 | s_add_f32 | SOP2 | Add two floating point inputs and store the result into a scalar register. |
| s_add_i32 | s_add_i32 | SOP2 | Add two signed 32-bit integer inputs, store the result into a scalar register and store the carry-out bit into SCC. |
| s_add_nc_u64 | s_add_nc_u64 | SOP2 | Add two unsigned 64-bit integer inputs and store the result into a scalar register. |
| s_add_pc_i64 | s_add_pc_i64 | SOP1 | AMDGPU SOP1 scalar instruction operating on i64 data. (Format and name extracted from LLVM's AMDGPU backend source - semantics not yet curated.) |
| s_add_u32 | s_add_u32 SDST, S0, S1 | SOP2 | Add two 32-bit unsigned scalar operands, wavefront-uniform. |
| s_add_u64 | s_add_u64 | SOP2 | AMDGPU SOP2 scalar instruction operating on u64 data. (Format and name extracted from LLVM's AMDGPU backend source - semantics not yet curated.) |
| s_addc_u32 | s_addc_u32 | SOP2 | Add two unsigned 32-bit integer inputs and a carry-in bit from SCC, store the result into a scalar register and store the carry-out bit into SCC. |
| s_addk_co_i32 | s_addk_co_i32 | SOPK | Add a scalar input and the sign extension of a literal 16-bit constant, store the result into a scalar register and store the carry-out bit into SCC. |
| s_addk_i32 | s_addk_i32 | SOPK | Add a scalar input and the sign extension of a literal 16-bit constant, store the result into a scalar register and store the carry-out bit into SCC. |
| s_alloc_vgpr | s_alloc_vgpr | SOP1 | Attempt to set the wave's VGPR allocation to the specified number of VGPRs (or greater). |
| s_and_b32 | s_and_b32 | SOP2 | Calculate bitwise AND on two scalar inputs, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_and_b64 | s_and_b64 | SOP2 | Calculate bitwise AND on two scalar inputs, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_and_not0_saveexec_b32 | s_and_not0_saveexec_b32 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask, set SCC iff the… |
| s_and_not0_saveexec_b64 | s_and_not0_saveexec_b64 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask, set SCC iff the… |
| s_and_not0_wrexec_b32 | s_and_not0_wrexec_b32 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask and also into the scalar… |
| s_and_not0_wrexec_b64 | s_and_not0_wrexec_b64 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask and also into the scalar… |
| s_and_not1_b32 | s_and_not1_b32 | SOP2 | Calculate bitwise AND with the first input and the negation of the second input, store the result into a scalar register and set SCC if the result is… |
| s_and_not1_b64 | s_and_not1_b64 | SOP2 | Calculate bitwise AND with the first input and the negation of the second input, store the result into a scalar register and set SCC if the result is… |
| s_and_not1_saveexec_b32 | s_and_not1_saveexec_b32 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask, set SCC iff the… |
| s_and_not1_saveexec_b64 | s_and_not1_saveexec_b64 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask, set SCC iff the… |
| s_and_not1_wrexec_b32 | s_and_not1_wrexec_b32 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask and also into the scalar… |
| s_and_not1_wrexec_b64 | s_and_not1_wrexec_b64 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask and also into the scalar… |
| s_and_saveexec_b32 | s_and_saveexec_b32 | SOP1 | Calculate bitwise AND on the scalar input and the EXEC mask, store the calculated result into the EXEC mask, set SCC iff the calculated result is… |
| s_and_saveexec_b64 | s_and_saveexec_b64 | SOP1 | Calculate bitwise AND on the scalar input and the EXEC mask, store the calculated result into the EXEC mask, set SCC iff the calculated result is… |
| s_andn1_saveexec_b32 | s_andn1_saveexec_b32 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask, set SCC iff the… |
| s_andn1_saveexec_b64 | s_andn1_saveexec_b64 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask, set SCC iff the… |
| s_andn1_wrexec_b32 | s_andn1_wrexec_b32 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask and also into the scalar… |
| s_andn1_wrexec_b64 | s_andn1_wrexec_b64 | SOP1 | Calculate bitwise AND on the EXEC mask and the negation of the scalar input, store the calculated result into the EXEC mask and also into the scalar… |
| s_andn2_b32 | s_andn2_b32 | SOP2 | Calculate bitwise AND with the first input and the negation of the second input, store the result into a scalar register and set SCC if the result is… |
| s_andn2_b64 | s_andn2_b64 | SOP2 | Calculate bitwise AND with the first input and the negation of the second input, store the result into a scalar register and set SCC if the result is… |
| s_andn2_saveexec_b32 | s_andn2_saveexec_b32 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask, set SCC iff the… |
| s_andn2_saveexec_b64 | s_andn2_saveexec_b64 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask, set SCC iff the… |
| s_andn2_wrexec_b32 | s_andn2_wrexec_b32 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask and also into the scalar… |
| s_andn2_wrexec_b64 | s_andn2_wrexec_b64 | SOP1 | Calculate bitwise AND on the scalar input and the negation of the EXEC mask, store the calculated result into the EXEC mask and also into the scalar… |
| s_ashr_i32 | s_ashr_i32 | SOP2 | Given a shift count in the second scalar input, calculate the arithmetic shift right (preserving sign bit) of the first scalar input, store the… |
| s_ashr_i64 | s_ashr_i64 | SOP2 | Given a shift count in the second scalar input, calculate the arithmetic shift right (preserving sign bit) of the first scalar input, store the… |
| s_barrier_init | s_barrier_init | SOP1 | AMDGPU SOP1 scalar instruction. (Format and name extracted from LLVM's AMDGPU backend source - semantics not yet curated.) |
| s_barrier_join | s_barrier_join | SOP1 | AMDGPU SOP1 scalar instruction. (Format and name extracted from LLVM's AMDGPU backend source - semantics not yet curated.) |
| s_barrier_signal | s_barrier_signal | SOP1 | Signal that a wave has arrived at a barrier . The argument specifies which barrier to signal. |
| s_barrier_signal_isfirst | s_barrier_signal_isfirst | SOP1 | Signal that a wave has arrived at a barrier and set SCC to indicate if this is the first wave to signal the barrier. |
| s_bcnt0_i32_b32 | s_bcnt0_i32_b32 | SOP1 | Count the number of "0" bits in a scalar input, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_bcnt0_i32_b64 | s_bcnt0_i32_b64 | SOP1 | Count the number of "0" bits in a scalar input, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_bcnt1_i32_b32 | s_bcnt1_i32_b32 | SOP1 | Count the number of "1" bits in a scalar input, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_bcnt1_i32_b64 | s_bcnt1_i32_b64 | SOP1 | Count the number of "1" bits in a scalar input, store the result into a scalar register and set SCC iff the result is nonzero. |
| s_bfe_i32 | s_bfe_i32 | SOP2 | Extract a signed bitfield from the first input using field offset and size encoded in the second input, store the result into a scalar register and… |
| s_bfe_i64 | s_bfe_i64 | SOP2 | Extract a signed bitfield from the first input using field offset and size encoded in the second input, store the result into a scalar register and… |
| s_bfe_u32 | s_bfe_u32 | SOP2 | Extract an unsigned bitfield from the first input using field offset and size encoded in the second input, store the result into a scalar register… |
| s_bfe_u64 | s_bfe_u64 | SOP2 | Extract an unsigned bitfield from the first input using field offset and size encoded in the second input, store the result into a scalar register… |
| s_bfm_b32 | s_bfm_b32 | SOP2 | Calculate a bitfield mask given a field offset and size and store the result in a scalar register. |
| s_bfm_b64 | s_bfm_b64 | SOP2 | Calculate a bitfield mask given a field offset and size and store the result in a scalar register. |
| s_bitreplicate_b64_b32 | s_bitreplicate_b64_b32 | SOP1 | Substitute each bit of a 32 bit scalar input with two instances of itself and store the result into a 64 bit scalar register. |
| s_bitset0_b32 | s_bitset0_b32 | SOP1 | Given a bit offset in a scalar input, set the indicated bit in the destination scalar register to 0. |
| s_bitset0_b64 | s_bitset0_b64 | SOP1 | Given a bit offset in a scalar input, set the indicated bit in the destination scalar register to 0. |
| s_bitset1_b32 | s_bitset1_b32 | SOP1 | Given a bit offset in a scalar input, set the indicated bit in the destination scalar register to 1. |
| s_bitset1_b64 | s_bitset1_b64 | SOP1 | Given a bit offset in a scalar input, set the indicated bit in the destination scalar register to 1. |
| s_brev_b32 | s_brev_b32 | SOP1 | Reverse the order of bits in a scalar input and store the result into a scalar register. |
| s_brev_b64 | s_brev_b64 | SOP1 | Reverse the order of bits in a scalar input and store the result into a scalar register. |
| s_call_b64 | s_call_b64 | SOPK | Store the address of the next instruction to a scalar register and then jump to a constant offset relative to the current PC. |
| s_call_i64 | s_call_i64 | SOPK | AMDGPU SOPK scalar instruction operating on i64 data. (Format and name extracted from LLVM's AMDGPU backend source - semantics not yet curated.) |
| s_cbranch_g_fork | s_cbranch_g_fork | SOP2 | Conditional branch using branch-stack. |
| s_cbranch_i_fork | s_cbranch_i_fork | SOPK | Conditional branch using branch-stack. |
| s_cbranch_join | s_cbranch_join | SOP1 | Conditional branch join point (end of conditional branch block). |
| s_ceil_f16 | s_ceil_f16 | SOP1 | Round the half-precision float input up to next integer and store the result in floating point format into a scalar register. |
| s_ceil_f32 | s_ceil_f32 | SOP1 | Round the single-precision float input up to next integer and store the result in floating point format into a scalar register. |
| s_cls_i32 | s_cls_i32 | SOP1 | Count the number of leading bits that are the same as the sign bit of a scalar input and store the result into a scalar register. |
| s_cls_i32_i64 | s_cls_i32_i64 | SOP1 | Count the number of leading bits that are the same as the sign bit of a scalar input and store the result into a scalar register. |
| s_clz_i32_u32 | s_clz_i32_u32 | SOP1 | Count the number of leading "0" bits before the first "1" in a scalar input and store the result into a scalar register. |
| s_clz_i32_u64 | s_clz_i32_u64 | SOP1 | Count the number of leading "0" bits before the first "1" in a scalar input and store the result into a scalar register. |
| s_cmov_b32 | s_cmov_b32 | SOP1 | Move scalar input into a scalar register iff SCC is nonzero. |
| s_cmov_b64 | s_cmov_b64 | SOP1 | Move scalar input into a scalar register iff SCC is nonzero. |
| s_cmovk_i32 | s_cmovk_i32 | SOPK | Move the sign extension of a literal 16-bit constant into a scalar register iff SCC is nonzero. |
| s_cmpk_eq_i32 | s_cmpk_eq_i32 | SOPK | Set SCC to 1 iff scalar input is equal to the sign extension of a literal 16-bit constant. |
| s_cmpk_eq_u32 | s_cmpk_eq_u32 | SOPK | Set SCC to 1 iff scalar input is equal to the zero extension of a literal 16-bit constant. |
| s_cmpk_ge_i32 | s_cmpk_ge_i32 | SOPK | Set SCC to 1 iff scalar input is greater than or equal to the sign extension of a literal 16-bit constant. |
| s_cmpk_ge_u32 | s_cmpk_ge_u32 | SOPK | Set SCC to 1 iff scalar input is greater than or equal to the zero extension of a literal 16-bit constant. |
| s_cmpk_gt_i32 | s_cmpk_gt_i32 | SOPK | Set SCC to 1 iff scalar input is greater than the sign extension of a literal 16-bit constant. |
| s_cmpk_gt_u32 | s_cmpk_gt_u32 | SOPK | Set SCC to 1 iff scalar input is greater than the zero extension of a literal 16-bit constant. |
| s_cmpk_le_i32 | s_cmpk_le_i32 | SOPK | Set SCC to 1 iff scalar input is less than or equal to the sign extension of a literal 16-bit constant. |
| s_cmpk_le_u32 | s_cmpk_le_u32 | SOPK | Set SCC to 1 iff scalar input is less than or equal to the zero extension of a literal 16-bit constant. |
| s_cmpk_lg_i32 | s_cmpk_lg_i32 | SOPK | Set SCC to 1 iff scalar input is less than or greater than the sign extension of a literal 16-bit constant. |
| s_cmpk_lg_u32 | s_cmpk_lg_u32 | SOPK | Set SCC to 1 iff scalar input is less than or greater than the zero extension of a literal 16-bit constant. |
| s_cmpk_lt_i32 | s_cmpk_lt_i32 | SOPK | Set SCC to 1 iff scalar input is less than the sign extension of a literal 16-bit constant. |
| s_cmpk_lt_u32 | s_cmpk_lt_u32 | SOPK | Set SCC to 1 iff scalar input is less than the zero extension of a literal 16-bit constant. |
| s_cselect_b32 | s_cselect_b32 | SOP2 | Select the first input if SCC is true otherwise select the second input, then store the selected input into a scalar register. |
| s_cselect_b64 | s_cselect_b64 | SOP2 | Select the first input if SCC is true otherwise select the second input, then store the selected input into a scalar register. |
| s_ctz_i32_b32 | s_ctz_i32_b32 | SOP1 | Count the number of trailing "0" bits before the first "1" in a scalar input and store the result into a scalar register. |
| s_ctz_i32_b64 | s_ctz_i32_b64 | SOP1 | Count the number of trailing "0" bits before the first "1" in a scalar input and store the result into a scalar register. |
| s_cvt_f16_f32 | s_cvt_f16_f32 | SOP1 | Convert from a single-precision float input to a half-precision float value and store the result into a scalar register. |
| s_cvt_f32_f16 | s_cvt_f32_f16 | SOP1 | Convert from a half-precision float input to a single-precision float value and store the result into a scalar register. |
| s_cvt_f32_i32 | s_cvt_f32_i32 | SOP1 | Convert from a signed 32-bit integer input to a single-precision float value and store the result into a scalar register. |
| s_cvt_f32_u32 | s_cvt_f32_u32 | SOP1 | Convert from an unsigned 32-bit integer input to a single-precision float value and store the result into a scalar register. |
| s_cvt_hi_f32_f16 | s_cvt_hi_f32_f16 | SOP1 | Convert from a half-precision float value in the high 16 bits of a scalar input to a single-precision float value and store the result into a scalar… |
| s_cvt_i32_f32 | s_cvt_i32_f32 | SOP1 | Convert from a single-precision float input to a signed 32-bit integer value and store the result into a scalar register. |
| s_cvt_pk_rtz_f16_f32 | s_cvt_pk_rtz_f16_f32 | SOP2 | Convert two single-precision float inputs into a packed half-precision float result using round toward zero semantics (ignore the current rounding… |