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Diffstat (limited to 'test/CodeGen/AMDGPU/sdiv.ll')
-rw-r--r-- | test/CodeGen/AMDGPU/sdiv.ll | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/test/CodeGen/AMDGPU/sdiv.ll b/test/CodeGen/AMDGPU/sdiv.ll new file mode 100644 index 000000000000..de645353a401 --- /dev/null +++ b/test/CodeGen/AMDGPU/sdiv.ll @@ -0,0 +1,104 @@ +; RUN: llc -march=amdgcn -mcpu=SI < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s +; RUN: llc -march=amdgcn -mcpu=tonga < %s | FileCheck -check-prefix=SI -check-prefix=FUNC %s +; RUN: llc -march=r600 -mcpu=redwood < %s | FileCheck -check-prefix=EG -check-prefix=FUNC %s + +; The code generated by sdiv is long and complex and may frequently change. +; The goal of this test is to make sure the ISel doesn't fail. +; +; This program was previously failing to compile when one of the selectcc +; opcodes generated by the sdiv lowering was being legalized and optimized to: +; selectcc Remainder -1, 0, -1, SETGT +; This was fixed by adding an additional pattern in R600Instructions.td to +; match this pattern with a CNDGE_INT. + +; FUNC-LABEL: {{^}}sdiv_i32: +; EG: CF_END +define void @sdiv_i32(i32 addrspace(1)* %out, i32 addrspace(1)* %in) { + %den_ptr = getelementptr i32, i32 addrspace(1)* %in, i32 1 + %num = load i32, i32 addrspace(1) * %in + %den = load i32, i32 addrspace(1) * %den_ptr + %result = sdiv i32 %num, %den + store i32 %result, i32 addrspace(1)* %out + ret void +} + +; FUNC-LABEL: {{^}}sdiv_i32_4: +define void @sdiv_i32_4(i32 addrspace(1)* %out, i32 addrspace(1)* %in) { + %num = load i32, i32 addrspace(1) * %in + %result = sdiv i32 %num, 4 + store i32 %result, i32 addrspace(1)* %out + ret void +} + +; Multiply by a weird constant to make sure setIntDivIsCheap is +; working. + +; FUNC-LABEL: {{^}}slow_sdiv_i32_3435: +; SI: buffer_load_dword [[VAL:v[0-9]+]], +; SI: v_mov_b32_e32 [[MAGIC:v[0-9]+]], 0x98a1930b +; SI: v_mul_hi_i32 [[TMP:v[0-9]+]], [[MAGIC]], [[VAL]] +; SI: v_add_i32 +; SI: v_lshrrev_b32 +; SI: v_ashrrev_i32 +; SI: v_add_i32 +; SI: buffer_store_dword +; SI: s_endpgm +define void @slow_sdiv_i32_3435(i32 addrspace(1)* %out, i32 addrspace(1)* %in) { + %num = load i32, i32 addrspace(1) * %in + %result = sdiv i32 %num, 3435 + store i32 %result, i32 addrspace(1)* %out + ret void +} + +define void @sdiv_v2i32(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) { + %den_ptr = getelementptr <2 x i32>, <2 x i32> addrspace(1)* %in, i32 1 + %num = load <2 x i32>, <2 x i32> addrspace(1) * %in + %den = load <2 x i32>, <2 x i32> addrspace(1) * %den_ptr + %result = sdiv <2 x i32> %num, %den + store <2 x i32> %result, <2 x i32> addrspace(1)* %out + ret void +} + +define void @sdiv_v2i32_4(<2 x i32> addrspace(1)* %out, <2 x i32> addrspace(1)* %in) { + %num = load <2 x i32>, <2 x i32> addrspace(1) * %in + %result = sdiv <2 x i32> %num, <i32 4, i32 4> + store <2 x i32> %result, <2 x i32> addrspace(1)* %out + ret void +} + +define void @sdiv_v4i32(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) { + %den_ptr = getelementptr <4 x i32>, <4 x i32> addrspace(1)* %in, i32 1 + %num = load <4 x i32>, <4 x i32> addrspace(1) * %in + %den = load <4 x i32>, <4 x i32> addrspace(1) * %den_ptr + %result = sdiv <4 x i32> %num, %den + store <4 x i32> %result, <4 x i32> addrspace(1)* %out + ret void +} + +define void @sdiv_v4i32_4(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) { + %num = load <4 x i32>, <4 x i32> addrspace(1) * %in + %result = sdiv <4 x i32> %num, <i32 4, i32 4, i32 4, i32 4> + store <4 x i32> %result, <4 x i32> addrspace(1)* %out + ret void +} + +; Tests for 64-bit divide bypass. +; define void @test_get_quotient(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { +; %result = sdiv i64 %a, %b +; store i64 %result, i64 addrspace(1)* %out, align 8 +; ret void +; } + +; define void @test_get_remainder(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { +; %result = srem i64 %a, %b +; store i64 %result, i64 addrspace(1)* %out, align 8 +; ret void +; } + +; define void @test_get_quotient_and_remainder(i64 addrspace(1)* %out, i64 %a, i64 %b) nounwind { +; %resultdiv = sdiv i64 %a, %b +; %resultrem = srem i64 %a, %b +; %result = add i64 %resultdiv, %resultrem +; store i64 %result, i64 addrspace(1)* %out, align 8 +; ret void +; } |