Mesa (master): aco: fix interaction with 3f branch workaround and p_constaddr
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Thu May 28 10:33:08 UTC 2020
Module: Mesa
Branch: master
Commit: 8aa98cebc15e6f6f8bcf42162399b5826376b3dc
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=8aa98cebc15e6f6f8bcf42162399b5826376b3dc
Author: Rhys Perry <pendingchaos02 at gmail.com>
Date: Fri May 22 15:42:12 2020 +0100
aco: fix interaction with 3f branch workaround and p_constaddr
The offset was incorrect if we inserted a nop before the p_constaddr.
Signed-off-by: Rhys Perry <pendingchaos02 at gmail.com>
Fixes: 93c8ebfa ('aco: Initial commit of independent AMD compiler')
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5164>
---
src/amd/compiler/aco_assembler.cpp | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/src/amd/compiler/aco_assembler.cpp b/src/amd/compiler/aco_assembler.cpp
index 8876b5bc8f8..3bdea63201d 100644
--- a/src/amd/compiler/aco_assembler.cpp
+++ b/src/amd/compiler/aco_assembler.cpp
@@ -42,8 +42,6 @@ static uint32_t get_sdwa_sel(unsigned sel, PhysReg reg)
void emit_instruction(asm_context& ctx, std::vector<uint32_t>& out, Instruction* instr)
{
- uint32_t instr_offset = out.size() * 4u;
-
/* lower remaining pseudo-instructions */
if (instr->opcode == aco_opcode::p_constaddr) {
unsigned dest = instr->definitions[0].physReg();
@@ -68,7 +66,7 @@ void emit_instruction(asm_context& ctx, std::vector<uint32_t>& out, Instruction*
encoding |= 255 << 8;
out.push_back(encoding);
ctx.constaddrs.push_back(out.size());
- out.push_back(-(instr_offset + 4) + offset);
+ out.push_back(offset);
/* s_addc_u32 dest[1], dest[1], 0 */
encoding = (0b10 << 30);
@@ -797,7 +795,7 @@ void fix_branches(asm_context& ctx, std::vector<uint32_t>& out)
void fix_constaddrs(asm_context& ctx, std::vector<uint32_t>& out)
{
for (unsigned addr : ctx.constaddrs)
- out[addr] += out.size() * 4u;
+ out[addr] += (out.size() - addr + 1u) * 4u;
}
unsigned emit_program(Program* program,
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