From: Gert Wollny Date: Fri, 10 Aug 2018 13:04:17 +0000 (+0200) Subject: Gallium/tgsi: Correct signdness of return value of bit operations X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=be95ca9be7b2a067b900979f7c01c1f2355509f5;p=mesa.git Gallium/tgsi: Correct signdness of return value of bit operations The GLSL operations findLSB, findMSB, and countBits always return a signed integer type. Let TGSI reflect this. v2: Properly set values in infer_(src|dst)_type (Thanks Roland Schneidegger for pointing out problems with my 1st approach) v2: Set values in the common infer_type code path, and only add the correct source type for UMSB (Roland Schneidegger) Signed-off-by: Gert Wollny Reviewed-by: Roland Scheidegger --- diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c index bbe1a21e432..d249b956ed3 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_info.c +++ b/src/gallium/auxiliary/tgsi/tgsi_info.c @@ -150,9 +150,6 @@ tgsi_opcode_infer_type(enum tgsi_opcode opcode) case TGSI_OPCODE_UBFE: case TGSI_OPCODE_BFI: case TGSI_OPCODE_BREV: - case TGSI_OPCODE_POPC: - case TGSI_OPCODE_LSB: - case TGSI_OPCODE_UMSB: case TGSI_OPCODE_IMG2HND: case TGSI_OPCODE_SAMP2HND: return TGSI_TYPE_UNSIGNED; @@ -188,6 +185,9 @@ tgsi_opcode_infer_type(enum tgsi_opcode opcode) case TGSI_OPCODE_U64SGE: case TGSI_OPCODE_I64SLT: case TGSI_OPCODE_I64SGE: + case TGSI_OPCODE_LSB: + case TGSI_OPCODE_POPC: + case TGSI_OPCODE_UMSB: return TGSI_TYPE_SIGNED; case TGSI_OPCODE_DADD: case TGSI_OPCODE_DABS: @@ -269,6 +269,7 @@ tgsi_opcode_infer_src_type(enum tgsi_opcode opcode, uint src_idx) case TGSI_OPCODE_UP2H: case TGSI_OPCODE_U2I64: case TGSI_OPCODE_MEMBAR: + case TGSI_OPCODE_UMSB: return TGSI_TYPE_UNSIGNED; case TGSI_OPCODE_IMUL_HI: case TGSI_OPCODE_I2F: