| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -verify-machineinstrs -mcpu=pwr9 -mtriple=powerpc64le-linux-gnu | FileCheck %s |
| |
| ; Verify that the fold of a*b-c*d respect the uses of a*b |
| define double @fsub1(double %a, double %b, double %c, double %d) { |
| ; CHECK-LABEL: fsub1: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xsmuldp 0, 2, 1 |
| ; CHECK-NEXT: fmr 1, 0 |
| ; CHECK-NEXT: xsnmsubadp 1, 4, 3 |
| ; CHECK-NEXT: xsmuldp 1, 0, 1 |
| ; CHECK-NEXT: blr |
| entry: |
| %mul = fmul contract reassoc double %b, %a |
| %mul1 = fmul contract reassoc double %d, %c |
| %sub = fsub contract reassoc nsz double %mul, %mul1 |
| %mul3 = fmul contract reassoc double %mul, %sub |
| ret double %mul3 |
| } |
| |
| ; Verify that the fold of a*b-c*d respect the uses of c*d |
| define double @fsub2(double %a, double %b, double %c, double %d) { |
| ; CHECK-LABEL: fsub2: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xsmuldp 0, 4, 3 |
| ; CHECK-NEXT: fmr 3, 0 |
| ; CHECK-NEXT: xsmsubadp 3, 2, 1 |
| ; CHECK-NEXT: xsmuldp 1, 0, 3 |
| ; CHECK-NEXT: blr |
| entry: |
| %mul = fmul contract reassoc double %b, %a |
| %mul1 = fmul contract reassoc double %d, %c |
| %sub = fsub contract reassoc double %mul, %mul1 |
| %mul3 = fmul contract reassoc double %mul1, %sub |
| ret double %mul3 |
| } |
| |
| ; Verify that the fold of a*b-c*d if there is no uses of a*b and c*d |
| define double @fsub3(double %a, double %b, double %c, double %d) { |
| ; CHECK-LABEL: fsub3: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xsmuldp 0, 4, 3 |
| ; CHECK-NEXT: xsmsubadp 0, 2, 1 |
| ; CHECK-NEXT: fmr 1, 0 |
| ; CHECK-NEXT: blr |
| entry: |
| %mul = fmul contract reassoc double %b, %a |
| %mul1 = fmul contract reassoc double %d, %c |
| %sub = fsub contract reassoc double %mul, %mul1 |
| ret double %sub |
| } |
| |
| ; Verify that the fold of a*b+c*d respect the uses of a*b |
| define double @fadd1(double %a, double %b, double %c, double %d) { |
| ; CHECK-LABEL: fadd1: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xsmuldp 0, 2, 1 |
| ; CHECK-NEXT: fmr 1, 0 |
| ; CHECK-NEXT: xsmaddadp 1, 4, 3 |
| ; CHECK-NEXT: xsmuldp 1, 0, 1 |
| ; CHECK-NEXT: blr |
| entry: |
| %mul = fmul contract reassoc double %b, %a |
| %mul1 = fmul contract reassoc double %d, %c |
| %add = fadd contract reassoc double %mul1, %mul |
| %mul3 = fmul contract reassoc double %mul, %add |
| ret double %mul3 |
| } |
| |
| ; Verify that the fold of a*b+c*d respect the uses of c*d |
| define double @fadd2(double %a, double %b, double %c, double %d) { |
| ; CHECK-LABEL: fadd2: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xsmuldp 0, 4, 3 |
| ; CHECK-NEXT: fmr 3, 0 |
| ; CHECK-NEXT: xsmaddadp 3, 2, 1 |
| ; CHECK-NEXT: xsmuldp 1, 0, 3 |
| ; CHECK-NEXT: blr |
| entry: |
| %mul = fmul contract reassoc double %b, %a |
| %mul1 = fmul contract reassoc double %d, %c |
| %add = fadd contract reassoc double %mul1, %mul |
| %mul3 = fmul contract reassoc double %mul1, %add |
| ret double %mul3 |
| } |
| |
| ; Verify that the fold of a*b+c*d if there is no uses of a*b and c*d |
| define double @fadd3(double %a, double %b, double %c, double %d) { |
| ; CHECK-LABEL: fadd3: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xsmuldp 1, 2, 1 |
| ; CHECK-NEXT: xsmaddadp 1, 4, 3 |
| ; CHECK-NEXT: blr |
| entry: |
| %mul = fmul contract reassoc double %b, %a |
| %mul1 = fmul contract reassoc double %d, %c |
| %add = fadd contract reassoc double %mul1, %mul |
| ret double %add |
| } |
| |
| define double @fma_multi_uses1(double %a, double %b, double %c, double %d, double* %p1, double* %p2, double* %p3) { |
| ; CHECK-LABEL: fma_multi_uses1: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: xsmuldp 1, 1, 2 |
| ; CHECK-NEXT: xsmuldp 0, 3, 4 |
| ; CHECK-NEXT: stfd 1, 0(7) |
| ; CHECK-NEXT: stfd 1, 0(8) |
| ; CHECK-NEXT: xsnmsubadp 1, 3, 4 |
| ; CHECK-NEXT: stfd 0, 0(9) |
| ; CHECK-NEXT: blr |
| %ab = fmul contract reassoc double %a, %b |
| %cd = fmul contract reassoc double %c, %d |
| store double %ab, double* %p1 ; extra use of %ab |
| store double %ab, double* %p2 ; another extra use of %ab |
| store double %cd, double* %p3 ; extra use of %cd |
| %r = fsub contract reassoc nsz double %ab, %cd |
| ret double %r |
| } |
| |
| define double @fma_multi_uses2(double %a, double %b, double %c, double %d, double* %p1, double* %p2, double* %p3) { |
| ; CHECK-LABEL: fma_multi_uses2: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: xsmuldp 5, 1, 2 |
| ; CHECK-NEXT: xsmuldp 0, 3, 4 |
| ; CHECK-NEXT: stfd 5, 0(7) |
| ; CHECK-NEXT: stfd 0, 0(8) |
| ; CHECK-NEXT: stfd 0, 0(9) |
| ; CHECK-NEXT: xsmsubadp 0, 1, 2 |
| ; CHECK-NEXT: fmr 1, 0 |
| ; CHECK-NEXT: blr |
| %ab = fmul contract reassoc double %a, %b |
| %cd = fmul contract reassoc double %c, %d |
| store double %ab, double* %p1 ; extra use of %ab |
| store double %cd, double* %p2 ; extra use of %cd |
| store double %cd, double* %p3 ; another extra use of %cd |
| %r = fsub contract reassoc double %ab, %cd |
| ret double %r |
| } |
| |
| define double @fma_multi_uses3(double %a, double %b, double %c, double %d, double %f, double %g, double* %p1, double* %p2, double* %p3) { |
| ; CHECK-LABEL: fma_multi_uses3: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: xsmuldp 0, 1, 2 |
| ; CHECK-NEXT: xsmuldp 1, 5, 6 |
| ; CHECK-NEXT: ld 3, 96(1) |
| ; CHECK-NEXT: stfd 0, 0(9) |
| ; CHECK-NEXT: stfd 0, 0(10) |
| ; CHECK-NEXT: stfd 1, 0(3) |
| ; CHECK-NEXT: xsnmsubadp 1, 3, 4 |
| ; CHECK-NEXT: xsnmsubadp 0, 3, 4 |
| ; CHECK-NEXT: xsadddp 1, 0, 1 |
| ; CHECK-NEXT: blr |
| %ab = fmul contract reassoc double %a, %b |
| %cd = fmul contract reassoc double %c, %d |
| %fg = fmul contract reassoc double %f, %g |
| store double %ab, double* %p1 ; extra use of %ab |
| store double %ab, double* %p2 ; another extra use of %ab |
| store double %fg, double* %p3 ; extra use of %fg |
| %q = fsub contract reassoc nsz double %fg, %cd ; The uses of %cd reduce to 1 after %r is folded. 2 uses of %fg, fold %cd, remove def of %cd |
| %r = fsub contract reassoc nsz double %ab, %cd ; Fold %r before %q. 3 uses of %ab, 2 uses of %cd, fold %cd |
| %add = fadd contract reassoc double %r, %q |
| ret double %add |
| } |