NVIDIA ISA Viewer

FSEL

Floating Point Select

5 variants on SM90 (H100)

FSEL

R,R,R,P

distilled: @P0 FSEL R0, R0, R0, P0;

key: FSEL_R_R_R_P

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	1	0	0	0	0	0	1	0	0	pred				operand 0								operand 1								operand 2								0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	cABS	cNEG
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	cNEG	cABS	0	0	0	0	0	0	FTZ	0	0	0	0	0	operand 3				cNOT	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

FSEL

R,R,F,P

distilled: @P0 FSEL R0, R0, 0, P0;

key: FSEL_R_R_F_P

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	1	0	0	0	0	0	0	0	1	pred				operand 0								operand 1								operand 2
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	cNEG	cABS	0	0	0	0	0	0	FTZ	0	0	0	0	0	operand 3				cNOT	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

FSEL

R,R,c[I][I],P

distilled: @P0 FSEL R0, R0, c[0x0][0x0], P0;

key: FSEL_R_R_I_I_P

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	1	0	0	0	0	0	1	0	1	pred				operand 0								operand 1								0	0	0	0	0	0	0	0	operand 3													operand 2	operand 3	operand 2				0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	cNEG	cABS	0	0	0	0	0	0	FTZ	0	0	0	0	0	operand 4				cNOT	0	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

FSEL

R,R,cx[UR][I],P

distilled: @P0 FSEL R0, R0, cx[UR0][0x0], P0;

key: FSEL_R_R_UR_I_P

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	1	0	0	0	0	0	1	0	1	pred				operand 0								operand 1								operand 2							0	operand 3															0	0	0	0	0	0	0	0	0
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	cNEG	cABS	0	0	0	0	0	0	FTZ	0	0	0	0	0	operand 4				cNOT	1	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0

FSEL

R,R,UR,P

distilled: @P0 FSEL R0, R0, UR0, P0;

key: FSEL_R_R_UR_P

0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	1	0	0	0	0	0	0	1	1	pred				operand 0								operand 1								operand 2							0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	cABS	cNEG
0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7	0	1	2	3	4	5	6	7
0	0	0	0	0	0	0	0	cNEG	cABS	0	0	0	0	0	0	FTZ	0	0	0	0	0	operand 3				cNOT	1	0	0	0	0	0	0	0	0	0	0	0	0	0	stall				y	r-bar			w-bar			b-mask						reuse				0	0