?? e_acosf.s
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fcmp.gt.s1 p9,p0 = acosf_abs_x,f1 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_x8 = acosf_x4,acosf_x4,f0 nop.i 999} { .mfb nop.m 999 fma.s1 acosf_t4 = acosf_t2,acosf_t2,f0(p6) br.cond.spnt ACOSF_ABS_ONE ;; // Branch if |x|=1} { .mfi nop.m 999 fma.s1 acosf_x5 = acosf_x2,acosf_x3,f0 nop.i 999}{ .mfb (p9) mov GR_Parameter_TAG = 59 fma.s1 acosf_yby2 = acosf_t,acosf_1by2,f0(p9) br.cond.spnt __libm_error_region ;; // Branch if |x|>1}{ .mfi nop.m 999 fma.s1 acosf_Az = acosf_t,acosf_B,f0 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_B2 = acosf_B,acosf_B,f0 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_poly_p1 = f8,acosf_coeff_P1,f0 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_2poly_p1 = acosf_coeff_P1,acosf_t,f1 nop.i 999;;}{ .mfi nop.m 999 fma.s1 acosf_poly_p3 = acosf_coeff_P4,acosf_x2,acosf_coeff_P3 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_2poly_p6 = acosf_coeff_P7,acosf_t,acosf_coeff_P6 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_poly_p7 = acosf_x2,acosf_coeff_P8,acosf_coeff_P7 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_2poly_p2 = acosf_coeff_P3,acosf_t,acosf_coeff_P2 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_poly_p5 = acosf_x2,acosf_coeff_P6,acosf_coeff_P5 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_2poly_p4 = acosf_coeff_P5,acosf_t,acosf_coeff_P4 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_x11 = acosf_x8,acosf_x3,f0 nop.i 999} { .mfi nop.m 999 fnma.s1 acosf_dz = acosf_B2,acosf_yby2,acosf_1by2 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_poly_p1a = acosf_x2,acosf_poly_p1,f8 nop.i 999}{ .mfi nop.m 999 fma.s1 acosf_2poly_p8 = acosf_coeff_P9,acosf_t,acosf_coeff_P8 nop.i 999;;} // Get the absolute value of x and determine the region in which x lies{ .mfi nop.m 999 fcmp.le.s1 p7,p8 = acosf_abs_x,acosf_const_sqrt2by2 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_poly_p2 = acosf_x2,acosf_poly_p3,acosf_coeff_P2 nop.i 999;;} { .mfi nop.m 999 fma.s1 acosf_poly_p7a = acosf_x4,acosf_coeff_P9,acosf_poly_p7 nop.i 999} { .mfi nop.m 999 fma.s1 acosf_2poly_p2a = acosf_2poly_p2,acosf_t2,acosf_2poly_p1 nop.i 999;;} { .mfi nop.m 999(p8) fma.s1 acosf_sgnx_t4 = acosf_sgn_x,acosf_t4,f0 nop.i 999} { .mfi nop.m 999(p8) fma.s1 acosf_2poly_p4a = acosf_2poly_p6,acosf_t2,acosf_2poly_p4 nop.i 999;;} { .mfi nop.m 999(p8) fma.s1 acosf_Sz = acosf_5by2,acosf_dz,acosf_3by2 nop.i 999} { .mfi nop.m 999(p8) fma.s1 acosf_d2z = acosf_dz,acosf_dz,f0 nop.i 999;;} { .mfi nop.m 999(p8) fnma.d.s1 acosf_sgn_x_piby2 = acosf_sgn_x,acosf_const_piby2,acosf_const_piby2 nop.i 999} { .mfi nop.m 999(p7) fma.s1 acosf_poly_Ax = acosf_x5,acosf_poly_p2,acosf_poly_p1a nop.i 999;;} { .mfi nop.m 999(p7) fma.s1 acosf_poly_Bx = acosf_x4,acosf_poly_p7a,acosf_poly_p5 nop.i 999} { .mfi nop.m 999(p8) fma.s1 acosf_sgnx_2poly_p2 = acosf_sgn_x,acosf_2poly_p2a,f0 nop.i 999;;} { .mfi nop.m 999 fcmp.eq.s0 p6,p0 = f8,f0 // Only purpose is to set D if x denormal nop.i 999}{ .mfi nop.m 999(p8) fma.s1 acosf_2poly_p4b = acosf_2poly_p8,acosf_t4,acosf_2poly_p4a nop.i 999;;} { .mfi nop.m 999(p8) fma.s1 acosf_Fz = acosf_d2z,acosf_Sz,acosf_dz nop.i 999;;} { .mfi nop.m 999(p8) fma.d.s1 acosf_Pt = acosf_2poly_p4b,acosf_sgnx_t4,acosf_sgnx_2poly_p2 nop.i 999;;} { .mfi nop.m 999(p8) fma.d.s1 acosf_z = acosf_Az,acosf_Fz,acosf_Az nop.i 999 ;;} { .mfi nop.m 999(p7) fma.d.s1 acosf_sinf1 = acosf_x11,acosf_poly_Bx,acosf_poly_Ax nop.i 999;;} .pred.rel "mutex",p8,p7 //acosf_pred_GTsqrt2by2,acosf_pred_LEsqrt2by2{ .mfi nop.m 999(p8) fma.s.s0 f8 = acosf_z,acosf_Pt,acosf_sgn_x_piby2 nop.i 999} { .mfb nop.m 999(p7) fms.s.s0 f8 = acosf_const_piby2,f1,acosf_sinf1 br.ret.sptk b0 ;;} ACOSF_ZERO:// Here if x=0{ .mfb nop.m 999 fma.s.s0 f8 = acosf_const_piby2,f1,f0 // acosf(0)=pi/2 br.ret.sptk b0 ;;} ACOSF_ABS_ONE:.pred.rel "mutex",p11,p12// Here if |x|=1{ .mfi nop.m 999(p11) fma.s.s0 f8 = acosf_const_piby2,f1,acosf_const_piby2 // acosf(-1)=pi nop.i 999} { .mfb nop.m 999(p12) fma.s.s0 f8 = f1,f0,f0 // acosf(1)=0 br.ret.sptk b0 ;;} GLOBAL_LIBM_END(acosf)// Stack operations when calling error support.// (1) (2)// sp -> + psp -> +// | |// | | <- GR_Y// | |// | <-GR_Y Y2->|// | |// | | <- GR_X// | |// sp-64 -> + sp -> +// save ar.pfs save b0// save gp// Stack operations when calling error support.// (3) (call) (4)// psp -> + sp -> +// | |// R3 ->| <- GR_RESULT | -> f8// | |// Y2 ->| <- GR_Y |// | |// X1 ->| |// | |// sp -> + +// restore gp// restore ar.pfsLOCAL_LIBM_ENTRY(__libm_error_region).prologue{ .mfi add GR_Parameter_Y=-32,sp // Parameter 2 value nop.f 999.save ar.pfs,GR_SAVE_PFS mov GR_SAVE_PFS=ar.pfs // Save ar.pfs}{ .mfi.fframe 64 add sp=-64,sp // Create new stack nop.f 0 mov GR_SAVE_GP=gp // Save gp};;{ .mmi stfs [GR_Parameter_Y] = f1,16 // Store Parameter 2 on stack add GR_Parameter_X = 16,sp // Parameter 1 address.save b0, GR_SAVE_B0 mov GR_SAVE_B0=b0 // Save b0};;.body{ .mfi nop.m 0 frcpa.s0 f9,p0 = f0,f0 nop.i 0};;{ .mib stfs [GR_Parameter_X] = f8 // Store Parameter 1 on stack add GR_Parameter_RESULT = 0,GR_Parameter_Y nop.b 0 // Parameter 3 address}{ .mib stfs [GR_Parameter_Y] = f9 // Store Parameter 3 on stack add GR_Parameter_Y = -16,GR_Parameter_Y br.call.sptk b0=__libm_error_support# // Call error handling function};;{ .mmi nop.m 0 nop.m 0 add GR_Parameter_RESULT = 48,sp};;{ .mmi ldfs f8 = [GR_Parameter_RESULT] // Get return result off stack.restore sp add sp = 64,sp // Restore stack pointer mov b0 = GR_SAVE_B0 // Restore return address};;{ .mib mov gp = GR_SAVE_GP // Restore gp mov ar.pfs = GR_SAVE_PFS // Restore ar.pfs br.ret.sptk b0 // Return};;LOCAL_LIBM_END(__libm_error_region).type __libm_error_support#,@function.global __libm_error_support#?? 快捷鍵說明
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