From c4d2da1f1471a742de7156e45ca52f83c75f0ba9 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Thu, 21 Feb 2019 12:47:37 -0800 Subject: [PATCH] v3d: Include a count of register pressure in the RA failure dumps. You usually want to go find the highest pressure and figure out why you couldn't spill or what pattern led to a bunch of pressure leading to that point. --- src/broadcom/compiler/vir_dump.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/src/broadcom/compiler/vir_dump.c b/src/broadcom/compiler/vir_dump.c index 7f58c59a31b..8fd32931c1b 100644 --- a/src/broadcom/compiler/vir_dump.c +++ b/src/broadcom/compiler/vir_dump.c @@ -348,11 +348,19 @@ void vir_dump(struct v3d_compile *c) { int ip = 0; + int pressure = 0; vir_for_each_block(block, c) { fprintf(stderr, "BLOCK %d:\n", block->index); vir_for_each_inst(inst, block) { if (c->live_intervals_valid) { + for (int i = 0; i < c->num_temps; i++) { + if (c->temp_start[i] == ip) + pressure++; + } + + fprintf(stderr, "P%4d ", pressure); + bool first = true; for (int i = 0; i < c->num_temps; i++) { @@ -364,7 +372,10 @@ vir_dump(struct v3d_compile *c) } else { fprintf(stderr, ", "); } - fprintf(stderr, "S%4d", i); + if (BITSET_TEST(c->spillable, i)) + fprintf(stderr, "S%4d", i); + else + fprintf(stderr, "U%4d", i); } if (first) @@ -386,6 +397,7 @@ vir_dump(struct v3d_compile *c) fprintf(stderr, ", "); } fprintf(stderr, "E%4d", i); + pressure--; } if (first) -- 2.30.2