1 files changed, 120 insertions, 0 deletions
diff --git a/llvm/test/Transforms/InstCombine/pow-4.ll b/llvm/test/Transforms/InstCombine/pow-4.ll
new file mode 100644
index 00000000000..76ef4c5de92
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/pow-4.ll
@@ -0,0 +1,120 @@
+; 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) #0 {
+; 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 float @llvm.pow.f32(float %x, float 4.000000e+00)
+  ret float %1
+}
+
+; pow(x, 3.0)
+define double @test_simplify_3(double %x) #0 {
+; 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 double @llvm.pow.f64(double %x, double 3.000000e+00)
+  ret double %1
+}
+
+; pow(x, 4.0)
+define double @test_simplify_4(double %x) #0 {
+; 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 double @llvm.pow.f64(double %x, double 4.000000e+00)
+  ret double %1
+}
+
+; pow(x, 15.0)
+define double @test_simplify_15(double %x) #0 {
+; 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 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) #0 {
+; 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 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) #0 {
+; 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 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) #0 {
+; CHECK-LABEL: @test_simplify_11_23(
+; CHECK-NOT: fmul
+; CHECK-NEXT: %1 = call double @llvm.pow.f64(double %x, double 1.123000e+01)
+; CHECK-NEXT: ret double %1
+  %1 = call double @llvm.pow.f64(double %x, double 1.123000e+01)
+  ret double %1
+}
+
+; pow(x, 32.0)
+define double @test_simplify_32(double %x) #0 {
+; 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 double @llvm.pow.f64(double %x, double 3.200000e+01)
+  ret double %1
+}
+
+; pow(x, 33.0)
+define double @test_simplify_33(double %x) #0 {
+; CHECK-LABEL: @test_simplify_33(
+; CHECK-NOT: fmul
+; CHECK-NEXT: %1 = call double @llvm.pow.f64(double %x, double 3.300000e+01)
+; CHECK-NEXT: ret double %1
+  %1 = call double @llvm.pow.f64(double %x, double 3.300000e+01)
+  ret double %1
+}
+
+attributes #0 = { nounwind readnone "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="true" "no-nans-fp-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="generic" "target-features"="+neon" "unsafe-fp-math"="true" "use-soft-float"="false" }