1 ; RUN: llc -march=amdgcn -mcpu=SI < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s 2 ; RUN: llc -march=amdgcn -mcpu=tonga < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s 3 ; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s 4 5 ; The code generated by sdiv is long and complex and may frequently change. 6 ; The goal of this test is to make sure the ISel doesn't fail. 7 ; 8 ; This program was previously failing to compile when one of the selectcc 9 ; opcodes generated by the sdiv lowering was being legalized and optimized to: 10 ; selectcc Remainder -1, 0, -1, SETGT 11 ; This was fixed by adding an additional pattern in R600Instructions.td to 12 ; match this pattern with a CNDGE_INT. 13 14 ; FUNC-LABEL: {{^}}sdiv_i32: 15 ; EG: CF_END 16 define void @sdiv_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) { 17 %den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1 18 %num = load i32, i32 addrspace(1) * %in 19 %den = load i32, i32 addrspace(1) * %den_ptr 20 %result = sdiv i32 %num, %den 21 store i32 %result, i32 addrspace(1)* %out 22 ret void 23 } 24 25 ; FUNC-LABEL: {{^}}sdiv_i32_4: 26 define void @sdiv_i32_4(i32 addrspace(1)* %out, i32 addrspace(1)* %in) { 27 %num = load i32, i32 addrspace(1) * %in 28 %result = sdiv i32 %num, 4 29 store i32 %result, i32 addrspace(1)* %out 30 ret void 31 } 32 33 ; Multiply by a weird constant to make sure setIntDivIsCheap is 34 ; working. 35 36 ; FUNC-LABEL: {{^}}slow_sdiv_i32_3435: 37 ; SI: buffer_load_dword [[VAL:v[0-9]+]], 38 ; SI: v_mov_b32_e32 [[MAGIC:v[0-9]+]], 0x98a1930b 39 ; SI: v_mul_hi_i32 [[TMP:v[0-9]+]], [[MAGIC]], [[VAL]] 40 ; SI: v_add_i32 41 ; SI: v_lshrrev_b32 42 ; SI: v_ashrrev_i32 43 ; SI: v_add_i32 44 ; SI: buffer_store_dword 45 ; SI: s_endpgm 46 define void @slow_sdiv_i32_3435(i32 addrspace(1)* %out, i32 addrspace(1)* %in) { 47 %num = load i32, i32 addrspace(1) * %in 48 %result = sdiv i32 %num, 3435 49 store i32 %result, i32 addrspace(1)* %out 50 ret void 51 } 52 53 define void @sdiv_v2i32(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) { 54 %den_ptr = getelementptr <2 x i32>, <2 x i32> addrspace(1)* %in, i32 1 55 %num = load <2 x i32>, <2 x i32> addrspace(1) * %in 56 %den = load <2 x i32>, <2 x i32> addrspace(1) * %den_ptr 57 %result = sdiv <2 x i32> %num, %den 58 store <2 x i32> %result, <2 x i32> addrspace(1)* %out 59 ret void 60 } 61 62 define void @sdiv_v2i32_4(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) { 63 %num = load <2 x i32>, <2 x i32> addrspace(1) * %in 64 %result = sdiv <2 x i32> %num, <i32 4, i32 4> 65 store <2 x i32> %result, <2 x i32> addrspace(1)* %out 66 ret void 67 } 68 69 define void @sdiv_v4i32(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) { 70 %den_ptr = getelementptr <4 x i32>, <4 x i32> addrspace(1)* %in, i32 1 71 %num = load <4 x i32>, <4 x i32> addrspace(1) * %in 72 %den = load <4 x i32>, <4 x i32> addrspace(1) * %den_ptr 73 %result = sdiv <4 x i32> %num, %den 74 store <4 x i32> %result, <4 x i32> addrspace(1)* %out 75 ret void 76 } 77 78 define void @sdiv_v4i32_4(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) { 79 %num = load <4 x i32>, <4 x i32> addrspace(1) * %in 80 %result = sdiv <4 x i32> %num, <i32 4, i32 4, i32 4, i32 4> 81 store <4 x i32> %result, <4 x i32> addrspace(1)* %out 82 ret void 83 } 84 85 ; Tests for 64-bit divide bypass. 86 ; define void @test_get_quotient(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { 87 ; %result = sdiv i64 %a, %b 88 ; store i64 %result, i64 addrspace(1)* %out, align 8 89 ; ret void 90 ; } 91 92 ; define void @test_get_remainder(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { 93 ; %result = srem i64 %a, %b 94 ; store i64 %result, i64 addrspace(1)* %out, align 8 95 ; ret void 96 ; } 97 98 ; define void @test_get_quotient_and_remainder(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { 99 ; %resultdiv = sdiv i64 %a, %b 100 ; %resultrem = srem i64 %a, %b 101 ; %result = add i64 %resultdiv, %resultrem 102 ; store i64 %result, i64 addrspace(1)* %out, align 8 103 ; ret void 104 ; } 105
