search for: yzw

...test_system_values(struct context *ctx) " UADD TEMP[0].xy, TEMP[0].xyxy, TEMP[0].zwzw\n" " UADD TEMP[0].x, TEMP[0].xxxx, TEMP[0].yyyy\n" " UMUL TEMP[0].x, TEMP[0], IMM[0]\n" - " STORE RES[0].xyzw, TEMP[0], SV[0]\n" + " LOAD TEMP[1].x, RINPUT, IMM[2]\n" + " UADD TEMP[0].x, TEMP[0], TEMP[1]\n" + " STORE RGLOBAL.xyzw, TEMP[0], SV[0]\n" " UADD TEMP[0].x, TEMP[0], IMM[1]\n" -...

...a 32bit integer mask and an inverted mask. So I have dst, src0, src1, imm1, imm2 And I have my asm look similar to: Add dst, src0.imm1, src1.imm2 and then in the asm printer I intercept vector_shuffle and I convert the integer to x,y,z,w, 0, 1 or _. For example if the mask is to take x from s1 and yzw from s2, I would generate 0x1000 and 0x0234. So my result looks like Iadd d0, s1.x000, s2.0yzw This allows you to do your vector shuffle in a single instruction. It's not the cleanest approach but it works for me and I can encode up to 8 swizzle per immediate so works on vector sizes up to 8...

Dan, Thanks a lot. Using a modifier in the assembly string works for this case. I am trying to solve a related problem. I am trying to print out a set of "mov" ops for the vector_shuffle node. Since the source of the "mov" is from one of the sources to vector_shuffle, depending on the mask, I am not sure what assembly string to emit. For example, if I have d <-