From 6c268ea79af80a65a89a23854bdbe8bc1e99ab23 Mon Sep 17 00:00:00 2001 From: Gert Wollny Date: Wed, 6 Dec 2017 17:42:02 +0100 Subject: [PATCH] r600/sb: do not convert if-blocks that contain indirect array access If an array is accessed within an if block, then currently it is not known whether the value in the address register is involved in the evaluation of the if condition, and converting the if condition may actually result in out-of-bounds array access. Consequently, if blocks that contain indirect array access should not be converted. Fixes piglits on r600/BARTS: spec/glsl-1.10/execution/variable-indexing/ vs-output-array-float-index-wr vs-output-array-vec3-index-wr vs-output-array-vec4-index-wr Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=104143 Signed-off-by: Gert Wollny Cc: Signed-off-by: Dave Airlie --- src/gallium/drivers/r600/sb/sb_if_conversion.cpp | 2 +- src/gallium/drivers/r600/sb/sb_ir.cpp | 2 ++ src/gallium/drivers/r600/sb/sb_ir.h | 3 ++- 3 files changed, 5 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/r600/sb/sb_if_conversion.cpp b/src/gallium/drivers/r600/sb/sb_if_conversion.cpp index 3f2b1b1..3f6431b 100644 --- a/src/gallium/drivers/r600/sb/sb_if_conversion.cpp +++ b/src/gallium/drivers/r600/sb/sb_if_conversion.cpp @@ -136,7 +136,7 @@ bool if_conversion::check_and_convert(region_node *r) { ); if (s.region_count || s.fetch_count || s.alu_kill_count || - s.if_count != 1 || s.repeat_count) + s.if_count != 1 || s.repeat_count || s.uses_ar) return false; unsigned real_alu_count = s.alu_count - s.alu_copy_mov_count; diff --git a/src/gallium/drivers/r600/sb/sb_ir.cpp b/src/gallium/drivers/r600/sb/sb_ir.cpp index d989dce..fe068ab 100644 --- a/src/gallium/drivers/r600/sb/sb_ir.cpp +++ b/src/gallium/drivers/r600/sb/sb_ir.cpp @@ -461,6 +461,8 @@ void container_node::collect_stats(node_stats& s) { ++s.alu_kill_count; else if (a->is_copy_mov()) ++s.alu_copy_mov_count; + if (a->uses_ar()) + s.uses_ar = true; } else if (n->is_fetch_inst()) ++s.fetch_count; else if (n->is_cf_inst()) diff --git a/src/gallium/drivers/r600/sb/sb_ir.h b/src/gallium/drivers/r600/sb/sb_ir.h index ec973e7..67c7cd8 100644 --- a/src/gallium/drivers/r600/sb/sb_ir.h +++ b/src/gallium/drivers/r600/sb/sb_ir.h @@ -726,11 +726,12 @@ struct node_stats { unsigned depart_count; unsigned repeat_count; unsigned if_count; + bool uses_ar; node_stats() : alu_count(), alu_kill_count(), alu_copy_mov_count(), cf_count(), fetch_count(), region_count(), loop_count(), phi_count(), loop_phi_count(), depart_count(), - repeat_count(), if_count() {} + repeat_count(), if_count(), uses_ar(false) {} void dump(); }; -- 2.7.4