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aco/tests: add disassembler tests to reproduce the add3+clamp crash

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Like some other v_add instructions, LLVM fails to disassemble
v_add3_u32 + clamp.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6961>
This commit is contained in:
Samuel Pitoiset
2020-10-01 10:11:33 +02:00
parent 01704dd1a4
commit 18fd6274b2
1 changed files with 37 additions and 0 deletions
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37
src/amd/compiler/tests/test_assembler.cpp
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@@ -227,3 +227,40 @@ BEGIN_TEST(assembler.long_jump.constaddr)
finish_assembler_test();
END_TEST
BEGIN_TEST(assembler.v_add3)
for (unsigned i = GFX9; i <= GFX10; i++) {
if (!setup_cs(NULL, (chip_class)i))
continue;
//~gfx9>> v_add3_u32 v0, 0, 0, 0 ; d1ff0000 02010080
//~gfx10>> v_add3_u32 v0, 0, 0, 0 ; d76d0000 02010080
aco_ptr<VOP3A_instruction> add3{create_instruction<VOP3A_instruction>(aco_opcode::v_add3_u32, Format::VOP3A, 3, 1)};
add3->operands[0] = Operand(0u);
add3->operands[1] = Operand(0u);
add3->operands[2] = Operand(0u);
add3->definitions[0] = Definition(PhysReg(0), v1);
bld.insert(std::move(add3));
finish_assembler_test();
}
END_TEST
BEGIN_TEST(assembler.v_add3_clamp)
for (unsigned i = GFX9; i <= GFX10; i++) {
if (!setup_cs(NULL, (chip_class)i))
continue;
//~gfx9>> integer addition + clamp ; d1ff8000 02010080
//~gfx10>> integer addition + clamp ; d76d8000 02010080
aco_ptr<VOP3A_instruction> add3{create_instruction<VOP3A_instruction>(aco_opcode::v_add3_u32, Format::VOP3A, 3, 1)};
add3->operands[0] = Operand(0u);
add3->operands[1] = Operand(0u);
add3->operands[2] = Operand(0u);
add3->definitions[0] = Definition(PhysReg(0), v1);
add3->clamp = 1;
bld.insert(std::move(add3));
finish_assembler_test();
}
END_TEST