From 44ec2f1751ec4a9f0ba9035f2343ffe5e16e693c Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Wed, 16 Oct 2013 12:02:41 -0700 Subject: [PATCH] i965/fs: Fix broken register spilling debug code. Now that reg spilling generates new vgrfs, we were looping forever if you ever turned it on. Instead, move the debug code into the register allocator right near where we'd be doing spilling anyway, which should more accurately reflect how register spilling occurs in the wild. Reviewed-by: Paul Berry --- src/mesa/drivers/dri/i965/brw_fs.cpp | 7 ------- src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp | 11 +++++++++++ 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp index a60941a..db48da2 100644 --- a/src/mesa/drivers/dri/i965/brw_fs.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs.cpp @@ -3098,13 +3098,6 @@ fs_visitor::run() assign_curb_setup(); assign_urb_setup(); - if (0) { - /* Debug of register spilling: Go spill everything. */ - for (int i = 0; i < virtual_grf_count; i++) { - spill_reg(i); - } - } - if (0) assign_regs_trivial(); else { diff --git a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp index 0b00b91..d86027e 100644 --- a/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp +++ b/src/mesa/drivers/dri/i965/brw_fs_reg_allocate.cpp @@ -476,6 +476,17 @@ fs_visitor::assign_regs() if (brw->gen >= 7) setup_mrf_hack_interference(g, first_mrf_hack_node); + /* Debug of register spilling: Go spill everything. */ + if (0) { + int reg = choose_spill_reg(g); + + if (reg != -1) { + spill_reg(reg); + ralloc_free(g); + return false; + } + } + if (!ra_allocate_no_spills(g)) { /* Failed to allocate registers. Spill a reg, and the caller will * loop back into here to try again. -- 2.7.4