From: Rob Clark <robclark@freedesktop.org>
Date: Tue, 20 Aug 2013 17:54:01 +0000 (-0400)
Subject: freedreno/a3xx/compiler: use max_reg rather than file_count
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=2effac5a67d8ed91802f96d2c59c0a5e1574e3f6;p=mesa.git

freedreno/a3xx/compiler: use max_reg rather than file_count

Our current (rather naive) register assignment is based on mapping
different register files (INPUT, OUTPUT, TEMP, CONST, etc) based on the
max register index of the preceding file.  But in some cases, the lowest
used register in a file might not be zero.  In which case
file_count[file] != file_max[file] + 1.

Signed-off-by: Rob Clark <robclark@freedesktop.org>
---

diff --git a/src/gallium/drivers/freedreno/a3xx/fd3_compiler.c b/src/gallium/drivers/freedreno/a3xx/fd3_compiler.c
index e2c78531d1e..dc5c87395f6 100644
--- a/src/gallium/drivers/freedreno/a3xx/fd3_compiler.c
+++ b/src/gallium/drivers/freedreno/a3xx/fd3_compiler.c
@@ -159,19 +159,19 @@ compile_init(struct fd3_compile_context *ctx, struct fd3_shader_stateobj *so,
 	/* Immediates go after constants: */
 	ctx->base_reg[TGSI_FILE_CONSTANT]  = 0;
 	ctx->base_reg[TGSI_FILE_IMMEDIATE] =
-			ctx->info.file_count[TGSI_FILE_CONSTANT];
+			ctx->info.file_max[TGSI_FILE_CONSTANT] + 1;
 
 	/* Temporaries after outputs after inputs: */
 	ctx->base_reg[TGSI_FILE_INPUT]     = 0;
 	ctx->base_reg[TGSI_FILE_OUTPUT]    =
-			ctx->info.file_count[TGSI_FILE_INPUT];
+			ctx->info.file_max[TGSI_FILE_INPUT] + 1;
 	ctx->base_reg[TGSI_FILE_TEMPORARY] =
-			ctx->info.file_count[TGSI_FILE_INPUT] +
-			ctx->info.file_count[TGSI_FILE_OUTPUT];
+			ctx->info.file_max[TGSI_FILE_INPUT] + 1 +
+			ctx->info.file_max[TGSI_FILE_OUTPUT] + 1;
 
 	so->first_immediate = ctx->base_reg[TGSI_FILE_IMMEDIATE];
-	ctx->immediate_idx = 4 * (ctx->info.file_count[TGSI_FILE_CONSTANT] +
-			ctx->info.file_count[TGSI_FILE_IMMEDIATE]);
+	ctx->immediate_idx = 4 * (ctx->info.file_max[TGSI_FILE_CONSTANT] + 1 +
+			ctx->info.file_max[TGSI_FILE_IMMEDIATE] + 1);
 
 	ret = tgsi_parse_init(&ctx->parser, tokens);
 	if (ret != TGSI_PARSE_OK)
@@ -309,7 +309,7 @@ get_internal_temp(struct fd3_compile_context *ctx,
 	/* assign next temporary: */
 	n = ctx->num_internal_temps++;
 
-	tmp_dst->Index = ctx->info.file_count[TGSI_FILE_TEMPORARY] + n;
+	tmp_dst->Index = ctx->info.file_max[TGSI_FILE_TEMPORARY] + n + 1;
 
 	src_from_dst(tmp_src, tmp_dst);
 }