Mesa (master): r600: lds load cleanups.

[Dave Airlie]

Module: Mesa
Branch: master
Commit: f8a54c489d305010eb6c622bb4e4acd714ee7532
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=f8a54c489d305010eb6c622bb4e4acd714ee7532

Author: Dave Airlie <airlied at redhat.com>
Date:   Wed Nov 29 13:13:17 2017 +1000

r600: lds load cleanups.

This is just some cleanups on top of the last patch from my compute branch.

Signed-off-by: Dave Airlie <airlied at redhat.com>

---

 src/gallium/drivers/r600/r600_shader.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/src/gallium/drivers/r600/r600_shader.c b/src/gallium/drivers/r600/r600_shader.c
index 2f2e002115..78f4e33e05 100644
--- a/src/gallium/drivers/r600/r600_shader.c
+++ b/src/gallium/drivers/r600/r600_shader.c
@@ -1747,12 +1747,13 @@ static int do_lds_fetch_values(struct r600_shader_ctx *ctx, unsigned temp_reg,
 			       unsigned dst_reg, unsigned mask)
 {
 	struct r600_bytecode_alu alu;
-	int r, i;
+	int r, i, lasti;
 
 	if ((ctx->bc->cf_last->ndw>>1) >= 0x60)
 		ctx->bc->force_add_cf = 1;
 
-	for (i = 1; i < 4; i++) {
+	lasti = tgsi_last_instruction(mask);
+	for (i = 1; i <= lasti; i++) {
 		if (!(mask & (1 << i)))
 			continue;
 
@@ -1763,8 +1764,8 @@ static int do_lds_fetch_values(struct r600_shader_ctx *ctx, unsigned temp_reg,
 		if (r)
 			return r;
 	}
-	for (i = 0; i < 4; i++) {
-		if (! (mask & (1 << i)))
+	for (i = 0; i <= lasti; i++) {
+		if (!(mask & (1 << i)))
 			continue;
 
 		/* emit an LDS_READ_RET */
@@ -1781,9 +1782,10 @@ static int do_lds_fetch_values(struct r600_shader_ctx *ctx, unsigned temp_reg,
 		if (r)
 			return r;
 	}
-	for (i = 0; i < 4; i++) {
-		if (! (mask & (1 << i)))
+	for (i = 0; i <= lasti; i++) {
+		if (!(mask & (1 << i)))
 			continue;
+
 		/* then read from LDS_OQ_A_POP */
 		memset(&alu, 0, sizeof(alu));