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