| ; RUN: llc -verify-machineinstrs -O3 -mcpu=pwr7 < %s | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-PWR |
| ; RUN: llc -verify-machineinstrs -O3 -mcpu=pwr9 < %s | FileCheck %s -check-prefix=FIXPOINT |
| target datalayout = "E-m:e-i64:64-n32:64" |
| target triple = "powerpc64-unknown-linux-gnu" |
| |
| ; Verify that the first two adds are independent regardless of how the inputs are |
| ; commuted. The destination registers are used as source registers for the third add. |
| |
| define float @reassociate_adds1(float %x0, float %x1, float %x2, float %x3) { |
| ; CHECK-LABEL: reassociate_adds1: |
| ; CHECK: # %bb.0: |
| ; CHECK: fadds [[REG0:[0-9]+]], 1, 2 |
| ; CHECK: fadds [[REG1:[0-9]+]], 3, 4 |
| ; CHECK: fadds 1, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz float %x0, %x1 |
| %t1 = fadd reassoc nsz float %t0, %x2 |
| %t2 = fadd reassoc nsz float %t1, %x3 |
| ret float %t2 |
| } |
| |
| define float @reassociate_adds2(float %x0, float %x1, float %x2, float %x3) { |
| ; CHECK-LABEL: reassociate_adds2: |
| ; CHECK: # %bb.0: |
| ; CHECK: fadds [[REG0:[0-9]+]], 1, 2 |
| ; CHECK: fadds [[REG1:[0-9]+]], 3, 4 |
| ; CHECK: fadds 1, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz float %x0, %x1 |
| %t1 = fadd reassoc nsz float %x2, %t0 |
| %t2 = fadd reassoc nsz float %t1, %x3 |
| ret float %t2 |
| } |
| |
| define float @reassociate_adds3(float %x0, float %x1, float %x2, float %x3) { |
| ; CHECK-LABEL: reassociate_adds3: |
| ; CHECK: # %bb.0: |
| ; CHECK: fadds [[REG0:[0-9]+]], 1, 2 |
| ; CHECK: fadds [[REG1:[0-9]+]], 3, 4 |
| ; CHECK: fadds 1, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz float %x0, %x1 |
| %t1 = fadd reassoc nsz float %t0, %x2 |
| %t2 = fadd reassoc nsz float %x3, %t1 |
| ret float %t2 |
| } |
| |
| define float @reassociate_adds4(float %x0, float %x1, float %x2, float %x3) { |
| ; CHECK-LABEL: reassociate_adds4: |
| ; CHECK: # %bb.0: |
| ; CHECK: fadds [[REG0:[0-9]+]], 1, 2 |
| ; CHECK: fadds [[REG1:[0-9]+]], 3, 4 |
| ; CHECK: fadds 1, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz float %x0, %x1 |
| %t1 = fadd reassoc nsz float %x2, %t0 |
| %t2 = fadd reassoc nsz float %x3, %t1 |
| ret float %t2 |
| } |
| |
| ; Verify that we reassociate some of these ops. The optimal balanced tree of adds is not |
| ; produced because that would cost more compile time. |
| |
| define float @reassociate_adds5(float %x0, float %x1, float %x2, float %x3, float %x4, float %x5, float %x6, float %x7) { |
| ; CHECK-LABEL: reassociate_adds5: |
| ; CHECK: # %bb.0: |
| ; CHECK-DAG: fadds [[REG12:[0-9]+]], 5, 6 |
| ; CHECK-DAG: fadds [[REG0:[0-9]+]], 1, 2 |
| ; CHECK-DAG: fadds [[REG11:[0-9]+]], 3, 4 |
| ; CHECK-DAG: fadds [[REG13:[0-9]+]], [[REG12]], 7 |
| ; CHECK-DAG: fadds [[REG1:[0-9]+]], [[REG0]], [[REG11]] |
| ; CHECK-DAG: fadds [[REG2:[0-9]+]], [[REG1]], [[REG13]] |
| ; CHECK: fadds 1, [[REG2]], 8 |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz float %x0, %x1 |
| %t1 = fadd reassoc nsz float %t0, %x2 |
| %t2 = fadd reassoc nsz float %t1, %x3 |
| %t3 = fadd reassoc nsz float %t2, %x4 |
| %t4 = fadd reassoc nsz float %t3, %x5 |
| %t5 = fadd reassoc nsz float %t4, %x6 |
| %t6 = fadd reassoc nsz float %t5, %x7 |
| ret float %t6 |
| } |
| |
| ; Verify that we reassociate vector instructions too. |
| |
| define <4 x float> @vector_reassociate_adds1(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) { |
| ; CHECK-LABEL: vector_reassociate_adds1: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR: xvaddsp [[REG0:[0-9]+]], 34, 35 |
| ; CHECK-PWR: xvaddsp [[REG1:[0-9]+]], 36, 37 |
| ; CHECK-PWR: xvaddsp 34, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz <4 x float> %x0, %x1 |
| %t1 = fadd reassoc nsz <4 x float> %t0, %x2 |
| %t2 = fadd reassoc nsz <4 x float> %t1, %x3 |
| ret <4 x float> %t2 |
| } |
| |
| define <4 x float> @vector_reassociate_adds2(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) { |
| ; CHECK-LABEL: vector_reassociate_adds2: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR: xvaddsp [[REG0:[0-9]+]], 34, 35 |
| ; CHECK-PWR: xvaddsp [[REG1:[0-9]+]], 36, 37 |
| ; CHECK-PWR: xvaddsp 34, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz <4 x float> %x0, %x1 |
| %t1 = fadd reassoc nsz <4 x float> %x2, %t0 |
| %t2 = fadd reassoc nsz <4 x float> %t1, %x3 |
| ret <4 x float> %t2 |
| } |
| |
| define <4 x float> @vector_reassociate_adds3(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) { |
| ; CHECK-LABEL: vector_reassociate_adds3: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR: xvaddsp [[REG0:[0-9]+]], 34, 35 |
| ; CHECK-PWR: xvaddsp [[REG1:[0-9]+]], 36, 37 |
| ; CHECK-PWR: xvaddsp 34, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz <4 x float> %x0, %x1 |
| %t1 = fadd reassoc nsz <4 x float> %t0, %x2 |
| %t2 = fadd reassoc nsz <4 x float> %x3, %t1 |
| ret <4 x float> %t2 |
| } |
| |
| define <4 x float> @vector_reassociate_adds4(<4 x float> %x0, <4 x float> %x1, <4 x float> %x2, <4 x float> %x3) { |
| ; CHECK-LABEL: vector_reassociate_adds4: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR: xvaddsp [[REG0:[0-9]+]], 34, 35 |
| ; CHECK-PWR: xvaddsp [[REG1:[0-9]+]], 36, 37 |
| ; CHECK-PWR: xvaddsp 34, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| |
| %t0 = fadd reassoc nsz <4 x float> %x0, %x1 |
| %t1 = fadd reassoc nsz <4 x float> %x2, %t0 |
| %t2 = fadd reassoc nsz <4 x float> %x3, %t1 |
| ret <4 x float> %t2 |
| } |
| |
| define float @reassociate_adds6(float %x0, float %x1, float %x2, float %x3) { |
| %t0 = fdiv float %x0, %x1 |
| %t1 = fadd float %x2, %t0 |
| %t2 = fadd float %x3, %t1 |
| ret float %t2 |
| } |
| |
| define float @reassociate_muls1(float %x0, float %x1, float %x2, float %x3) { |
| %t0 = fdiv float %x0, %x1 |
| %t1 = fmul float %x2, %t0 |
| %t2 = fmul float %x3, %t1 |
| ret float %t2 |
| } |
| |
| define double @reassociate_adds_double(double %x0, double %x1, double %x2, double %x3) { |
| %t0 = fdiv double %x0, %x1 |
| %t1 = fadd double %x2, %t0 |
| %t2 = fadd double %x3, %t1 |
| ret double %t2 |
| } |
| |
| define double @reassociate_muls_double(double %x0, double %x1, double %x2, double %x3) { |
| %t0 = fdiv double %x0, %x1 |
| %t1 = fmul double %x2, %t0 |
| %t2 = fmul double %x3, %t1 |
| ret double %t2 |
| } |
| |
| define i32 @reassociate_mullw(i32 %x0, i32 %x1, i32 %x2, i32 %x3) { |
| ; FIXPOINT-LABEL: reassociate_mullw: |
| ; FIXPOINT: # %bb.0: |
| ; FIXPOINT: mullw [[REG0:[0-9]+]], 3, 4 |
| ; FIXPOINT: mullw [[REG1:[0-9]+]], 5, 6 |
| ; FIXPOINT: mullw 3, [[REG0]], [[REG1]] |
| ; FIXPOINT-NEXT: blr |
| |
| %t0 = mul i32 %x0, %x1 |
| %t1 = mul i32 %t0, %x2 |
| %t2 = mul i32 %t1, %x3 |
| ret i32 %t2 |
| } |
| |
| define i64 @reassociate_mulld(i64 %x0, i64 %x1, i64 %x2, i64 %x3) { |
| ; FIXPOINT-LABEL: reassociate_mulld: |
| ; FIXPOINT: # %bb.0: |
| ; FIXPOINT: mulld [[REG0:[0-9]+]], 3, 4 |
| ; FIXPOINT: mulld [[REG1:[0-9]+]], 5, 6 |
| ; FIXPOINT: mulld 3, [[REG0]], [[REG1]] |
| ; FIXPOINT-NEXT: blr |
| |
| %t0 = mul i64 %x0, %x1 |
| %t1 = mul i64 %t0, %x2 |
| %t2 = mul i64 %t1, %x3 |
| ret i64 %t2 |
| } |
| |
| define double @reassociate_mamaa_double(double %0, double %1, double %2, double %3, double %4, double %5) { |
| ; CHECK-LABEL: reassociate_mamaa_double: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR-DAG: xsmaddadp 1, 6, 5 |
| ; CHECK-PWR-DAG: xsmaddadp 2, 4, 3 |
| ; CHECK-PWR: xsadddp 1, 2, 1 |
| ; CHECK-NEXT: blr |
| %7 = fmul reassoc nsz double %3, %2 |
| %8 = fmul reassoc nsz double %5, %4 |
| %9 = fadd reassoc nsz double %1, %0 |
| %10 = fadd reassoc nsz double %9, %7 |
| %11 = fadd reassoc nsz double %10, %8 |
| ret double %11 |
| } |
| |
| define float @reassociate_mamaa_float(float %0, float %1, float %2, float %3, float %4, float %5) { |
| ; CHECK-LABEL: reassociate_mamaa_float: |
| ; CHECK: # %bb.0: |
| ; CHECK-DAG: fmadds [[REG0:[0-9]+]], 4, 3, 2 |
| ; CHECK-DAG: fmadds [[REG1:[0-9]+]], 6, 5, 1 |
| ; CHECK: fadds 1, [[REG0]], [[REG1]] |
| ; CHECK-NEXT: blr |
| %7 = fmul reassoc nsz float %3, %2 |
| %8 = fmul reassoc nsz float %5, %4 |
| %9 = fadd reassoc nsz float %1, %0 |
| %10 = fadd reassoc nsz float %9, %7 |
| %11 = fadd reassoc nsz float %10, %8 |
| ret float %11 |
| } |
| |
| define <4 x float> @reassociate_mamaa_vec(<4 x float> %0, <4 x float> %1, <4 x float> %2, <4 x float> %3, <4 x float> %4, <4 x float> %5) { |
| ; CHECK-LABEL: reassociate_mamaa_vec: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR-DAG: xvmaddasp [[REG0:[0-9]+]], 39, 38 |
| ; CHECK-PWR-DAG: xvmaddasp [[REG1:[0-9]+]], 37, 36 |
| ; CHECK-PWR: xvaddsp 34, [[REG1]], [[REG0]] |
| ; CHECK-NEXT: blr |
| %7 = fmul reassoc nsz <4 x float> %3, %2 |
| %8 = fmul reassoc nsz <4 x float> %5, %4 |
| %9 = fadd reassoc nsz <4 x float> %1, %0 |
| %10 = fadd reassoc nsz <4 x float> %9, %7 |
| %11 = fadd reassoc nsz <4 x float> %10, %8 |
| ret <4 x float> %11 |
| } |
| |
| define double @reassociate_mamama_double(double %0, double %1, double %2, double %3, double %4, double %5, double %6, double %7, double %8) { |
| ; CHECK-LABEL: reassociate_mamama_double: |
| ; CHECK: # %bb.0: |
| ; CHECK-PWR: xsmaddadp 7, 2, 1 |
| ; CHECK-PWR-DAG: xsmuldp [[REG0:[0-9]+]], 4, 3 |
| ; CHECK-PWR-DAG: xsmaddadp 7, 6, 5 |
| ; CHECK-PWR-DAG: xsmaddadp [[REG0]], 9, 8 |
| ; CHECK-PWR: xsadddp 1, 7, [[REG0]] |
| ; CHECK-NEXT: blr |
| %10 = fmul reassoc nsz double %1, %0 |
| %11 = fmul reassoc nsz double %3, %2 |
| %12 = fmul reassoc nsz double %5, %4 |
| %13 = fmul reassoc nsz double %8, %7 |
| %14 = fadd reassoc nsz double %11, %10 |
| %15 = fadd reassoc nsz double %14, %6 |
| %16 = fadd reassoc nsz double %15, %12 |
| %17 = fadd reassoc nsz double %16, %13 |
| ret double %17 |
| } |
| |
| define dso_local float @reassociate_mamama_8(float %0, float %1, float %2, float %3, float %4, float %5, float %6, float %7, float %8, |
| float %9, float %10, float %11, float %12, float %13, float %14, float %15, float %16) { |
| ; CHECK-LABEL: reassociate_mamama_8: |
| ; CHECK: # %bb.0: |
| ; CHECK-DAG: fmadds [[REG0:[0-9]+]], 3, 2, 1 |
| ; CHECK-DAG: fmuls [[REG1:[0-9]+]], 5, 4 |
| ; CHECK-DAG: fmadds [[REG2:[0-9]+]], 7, 6, [[REG0]] |
| ; CHECK-DAG: fmadds [[REG3:[0-9]+]], 9, 8, [[REG1]] |
| ; |
| ; CHECK-DAG: fmadds [[REG4:[0-9]+]], 13, 12, [[REG3]] |
| ; CHECK-DAG: fmadds [[REG5:[0-9]+]], 11, 10, [[REG2]] |
| ; |
| ; CHECK-DAG: fmadds [[REG6:[0-9]+]], 3, 2, [[REG4]] |
| ; CHECK-DAG: fmadds [[REG7:[0-9]+]], 5, 4, [[REG5]] |
| ; CHECK: fadds 1, [[REG7]], [[REG6]] |
| ; CHECK-NEXT: blr |
| %18 = fmul reassoc nsz float %2, %1 |
| %19 = fadd reassoc nsz float %18, %0 |
| %20 = fmul reassoc nsz float %4, %3 |
| %21 = fadd reassoc nsz float %19, %20 |
| %22 = fmul reassoc nsz float %6, %5 |
| %23 = fadd reassoc nsz float %21, %22 |
| %24 = fmul reassoc nsz float %8, %7 |
| %25 = fadd reassoc nsz float %23, %24 |
| %26 = fmul reassoc nsz float %10, %9 |
| %27 = fadd reassoc nsz float %25, %26 |
| %28 = fmul reassoc nsz float %12, %11 |
| %29 = fadd reassoc nsz float %27, %28 |
| %30 = fmul reassoc nsz float %14, %13 |
| %31 = fadd reassoc nsz float %29, %30 |
| %32 = fmul reassoc nsz float %16, %15 |
| %33 = fadd reassoc nsz float %31, %32 |
| ret float %33 |
| } |
| |
