| ; Test that the pow library call simplifier works correctly. |
| |
| ; RUN: opt -instcombine -S < %s | FileCheck %s |
| |
| ; Function Attrs: nounwind readnone |
| declare double @llvm.pow.f64(double, double) |
| declare float @llvm.pow.f32(float, float) |
| |
| ; pow(x, 4.0f) |
| define float @test_simplify_4f(float %x) { |
| ; CHECK-LABEL: @test_simplify_4f( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul float %x, %x |
| ; CHECK-NEXT: %2 = fmul float %1, %1 |
| ; CHECK-NEXT: ret float %2 |
| %1 = call fast float @llvm.pow.f32(float %x, float 4.000000e+00) |
| ret float %1 |
| } |
| |
| ; pow(x, 3.0) |
| define double @test_simplify_3(double %x) { |
| ; CHECK-LABEL: @test_simplify_3( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul double %x, %x |
| ; CHECK-NEXT: %2 = fmul double %1, %x |
| ; CHECK-NEXT: ret double %2 |
| %1 = call fast double @llvm.pow.f64(double %x, double 3.000000e+00) |
| ret double %1 |
| } |
| |
| ; pow(x, 4.0) |
| define double @test_simplify_4(double %x) { |
| ; CHECK-LABEL: @test_simplify_4( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul double %x, %x |
| ; CHECK-NEXT: %2 = fmul double %1, %1 |
| ; CHECK-NEXT: ret double %2 |
| %1 = call fast double @llvm.pow.f64(double %x, double 4.000000e+00) |
| ret double %1 |
| } |
| |
| ; pow(x, 15.0) |
| define double @test_simplify_15(double %x) { |
| ; CHECK-LABEL: @test_simplify_15( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul double %x, %x |
| ; CHECK-NEXT: %2 = fmul double %1, %x |
| ; CHECK-NEXT: %3 = fmul double %2, %2 |
| ; CHECK-NEXT: %4 = fmul double %3, %3 |
| ; CHECK-NEXT: %5 = fmul double %2, %4 |
| ; CHECK-NEXT: ret double %5 |
| %1 = call fast double @llvm.pow.f64(double %x, double 1.500000e+01) |
| ret double %1 |
| } |
| |
| ; pow(x, -7.0) |
| define double @test_simplify_neg_7(double %x) { |
| ; CHECK-LABEL: @test_simplify_neg_7( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul double %x, %x |
| ; CHECK-NEXT: %2 = fmul double %1, %x |
| ; CHECK-NEXT: %3 = fmul double %1, %2 |
| ; CHECK-NEXT: %4 = fmul double %1, %3 |
| ; CHECK-NEXT: %5 = fdiv double 1.000000e+00, %4 |
| ; CHECK-NEXT: ret double %5 |
| %1 = call fast double @llvm.pow.f64(double %x, double -7.000000e+00) |
| ret double %1 |
| } |
| |
| ; pow(x, -19.0) |
| define double @test_simplify_neg_19(double %x) { |
| ; CHECK-LABEL: @test_simplify_neg_19( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul double %x, %x |
| ; CHECK-NEXT: %2 = fmul double %1, %1 |
| ; CHECK-NEXT: %3 = fmul double %2, %2 |
| ; CHECK-NEXT: %4 = fmul double %3, %3 |
| ; CHECK-NEXT: %5 = fmul double %1, %4 |
| ; CHECK-NEXT: %6 = fmul double %5, %x |
| ; CHECK-NEXT: %7 = fdiv double 1.000000e+00, %6 |
| ; CHECK-NEXT: ret double %7 |
| %1 = call fast double @llvm.pow.f64(double %x, double -1.900000e+01) |
| ret double %1 |
| } |
| |
| ; pow(x, 11.23) |
| define double @test_simplify_11_23(double %x) { |
| ; CHECK-LABEL: @test_simplify_11_23( |
| ; CHECK-NOT: fmul |
| ; CHECK-NEXT: %1 = call fast double @llvm.pow.f64(double %x, double 1.123000e+01) |
| ; CHECK-NEXT: ret double %1 |
| %1 = call fast double @llvm.pow.f64(double %x, double 1.123000e+01) |
| ret double %1 |
| } |
| |
| ; pow(x, 32.0) |
| define double @test_simplify_32(double %x) { |
| ; CHECK-LABEL: @test_simplify_32( |
| ; CHECK-NOT: pow |
| ; CHECK-NEXT: %1 = fmul double %x, %x |
| ; CHECK-NEXT: %2 = fmul double %1, %1 |
| ; CHECK-NEXT: %3 = fmul double %2, %2 |
| ; CHECK-NEXT: %4 = fmul double %3, %3 |
| ; CHECK-NEXT: %5 = fmul double %4, %4 |
| ; CHECK-NEXT: ret double %5 |
| %1 = call fast double @llvm.pow.f64(double %x, double 3.200000e+01) |
| ret double %1 |
| } |
| |
| ; pow(x, 33.0) |
| define double @test_simplify_33(double %x) { |
| ; CHECK-LABEL: @test_simplify_33( |
| ; CHECK-NOT: fmul |
| ; CHECK-NEXT: %1 = call fast double @llvm.pow.f64(double %x, double 3.300000e+01) |
| ; CHECK-NEXT: ret double %1 |
| %1 = call fast double @llvm.pow.f64(double %x, double 3.300000e+01) |
| ret double %1 |
| } |
| |