1 ; RUN: llc < %s -march=r600 -mcpu=redwood | FileCheck %s --check-prefix=EG --check-prefix=FUNC
2 ; RUN: llc < %s -march=r600 -mcpu=cayman | FileCheck %s --check-prefix=EG --check-prefix=FUNC
3 ; RUN: llc < %s -march=amdgcn -mcpu=SI -verify-machineinstrs | FileCheck %s --check-prefix=SI --check-prefix=FUNC
4 ; RUN: llc < %s -march=amdgcn -mcpu=tonga -verify-machineinstrs | FileCheck %s --check-prefix=SI --check-prefix=FUNC
6 ; FUNC-LABEL: {{^}}u32_mad24:
10 define void @u32_mad24(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c) {
13 %a_24 = lshr i32 %0, 8
15 %b_24 = lshr i32 %1, 8
16 %2 = mul i32 %a_24, %b_24
18 store i32 %3, i32 addrspace(1)* %out
22 ; FUNC-LABEL: {{^}}i16_mad24:
23 ; The order of A and B does not matter.
24 ; EG: MULADD_UINT24 {{[* ]*}}T{{[0-9]}}.[[MAD_CHAN:[XYZW]]]
25 ; The result must be sign-extended
26 ; EG: BFE_INT {{[* ]*}}T{{[0-9]\.[XYZW]}}, PV.[[MAD_CHAN]], 0.0, literal.x
28 ; SI: v_mad_u32_u24 [[MAD:v[0-9]]], {{[sv][0-9], [sv][0-9]}}
29 ; SI: v_bfe_i32 v{{[0-9]}}, [[MAD]], 0, 16
31 define void @i16_mad24(i32 addrspace(1)* %out, i16 %a, i16 %b, i16 %c) {
35 %2 = sext i16 %1 to i32
36 store i32 %2, i32 addrspace(1)* %out
40 ; FUNC-LABEL: {{^}}i8_mad24:
41 ; EG: MULADD_UINT24 {{[* ]*}}T{{[0-9]}}.[[MAD_CHAN:[XYZW]]]
42 ; The result must be sign-extended
43 ; EG: BFE_INT {{[* ]*}}T{{[0-9]\.[XYZW]}}, PV.[[MAD_CHAN]], 0.0, literal.x
45 ; SI: v_mad_u32_u24 [[MUL:v[0-9]]], {{[sv][0-9], [sv][0-9]}}
46 ; SI: v_bfe_i32 v{{[0-9]}}, [[MUL]], 0, 8
48 define void @i8_mad24(i32 addrspace(1)* %out, i8 %a, i8 %b, i8 %c) {
52 %2 = sext i8 %1 to i32
53 store i32 %2, i32 addrspace(1)* %out
57 ; This tests for a bug where the mad_u24 pattern matcher would call
58 ; SimplifyDemandedBits on the first operand of the mul instruction
59 ; assuming that the pattern would be matched to a 24-bit mad. This
60 ; led to some instructions being incorrectly erased when the entire
61 ; 24-bit mad pattern wasn't being matched.
63 ; Check that the select instruction is not deleted.
64 ; FUNC-LABEL: {{^}}i24_i32_i32_mad:
67 define void @i24_i32_i32_mad(i32 addrspace(1)* %out, i32 %a, i32 %b, i32 %c, i32 %d) {
70 %1 = icmp ne i32 %c, 0
71 %2 = select i1 %1, i32 %0, i32 34
74 store i32 %4, i32 addrspace(1)* %out