1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s -verify-machineinstrs -mtriple=powerpc64le-linux-gnu | FileCheck %s 3 4 define float @can_fma_with_fewer_uses(float %f1, float %f2, float %f3, float %f4) { 5 ; CHECK-LABEL: can_fma_with_fewer_uses: 6 ; CHECK: # %bb.0: 7 ; CHECK-NEXT: xsmulsp 0, 1, 2 8 ; CHECK-NEXT: fmr 1, 0 9 ; CHECK-NEXT: xsmaddasp 1, 3, 4 10 ; CHECK-NEXT: xsdivsp 1, 0, 1 11 ; CHECK-NEXT: blr 12 %mul1 = fmul contract float %f1, %f2 13 %mul2 = fmul contract float %f3, %f4 14 %add = fadd contract float %mul1, %mul2 15 %second_use_of_mul1 = fdiv float %mul1, %add 16 ret float %second_use_of_mul1 17 } 18 19 ; There is no contract on the mul with no extra use so we can't fuse that. 20 ; Since we are fusing with the mul with an extra use, the fmul needs to stick 21 ; around beside the fma. 22 define float @no_fma_with_fewer_uses(float %f1, float %f2, float %f3, float %f4) { 23 ; CHECK-LABEL: no_fma_with_fewer_uses: 24 ; CHECK: # %bb.0: 25 ; CHECK-NEXT: xsmulsp 0, 1, 2 26 ; CHECK-NEXT: fmr 1, 0 27 ; CHECK-NEXT: xsmaddasp 1, 3, 4 28 ; CHECK-NEXT: xsdivsp 1, 0, 1 29 ; CHECK-NEXT: blr 30 %mul1 = fmul contract float %f1, %f2 31 %mul2 = fmul float %f3, %f4 32 %add = fadd contract float %mul1, %mul2 33 %second_use_of_mul1 = fdiv float %mul1, %add 34 ret float %second_use_of_mul1 35 } 36
