1 files changed, 72 insertions, 0 deletions
diff --git a/test/Transforms/SimplifyCFG/AArch64/prefer-fma.ll b/test/Transforms/SimplifyCFG/AArch64/prefer-fma.ll
new file mode 100644
index 0000000..076cb58
--- /dev/null
+++ b/test/Transforms/SimplifyCFG/AArch64/prefer-fma.ll
@@ -0,0 +1,72 @@
+; RUN: opt < %s -mtriple=aarch64-linux-gnu -simplifycfg -enable-unsafe-fp-math -S >%t
+; RUN: FileCheck %s < %t
+; ModuleID = 't.cc'
+
+; Function Attrs: nounwind
+define double @_Z3fooRdS_S_S_(double* dereferenceable(8) %x, double* dereferenceable(8) %y, double* dereferenceable(8) %a) #0 {
+entry:
+  %0 = load double* %y, align 8
+  %cmp = fcmp oeq double %0, 0.000000e+00
+  %1 = load double* %x, align 8
+  br i1 %cmp, label %if.then, label %if.else
+
+; fadd (const, (fmul x, y))
+if.then:                                          ; preds = %entry
+; CHECK-LABEL: if.then:
+; CHECK:   %3 = fmul fast double %1, %2
+; CHECK-NEXT:   %mul = fadd fast double 1.000000e+00, %3
+  %2 = load double* %a, align 8
+  %3 = fmul fast double %1, %2
+  %mul = fadd fast double 1.000000e+00, %3
+  store double %mul, double* %y, align 8
+  br label %if.end
+
+; fsub ((fmul x, y), z)
+if.else:                                          ; preds = %entry
+; CHECK-LABEL: if.else:
+; CHECK:   %mul1 = fmul fast double %1, %2
+; CHECK-NEXT:   %sub1 = fsub fast double %mul1, %0
+  %4 = load double* %a, align 8
+  %mul1 = fmul fast double %1, %4
+  %sub1 = fsub fast double %mul1, %0
+  store double %sub1, double* %y, align 8
+  br label %if.end
+
+if.end:                                           ; preds = %if.else, %if.then
+  %5 = load double* %y, align 8
+  %cmp2 = fcmp oeq double %5, 2.000000e+00
+  %6 = load double* %x, align 8
+  br i1 %cmp2, label %if.then2, label %if.else2
+
+; fsub (x, (fmul y, z))
+if.then2:                                         ; preds = %entry
+; CHECK-LABEL: if.then2:
+; CHECK:   %7 = fmul fast double %5, 3.000000e+00
+; CHECK-NEXT:   %mul2 = fsub fast double %6, %7
+  %7 = load double* %a, align 8
+  %8 = fmul fast double %6, 3.0000000e+00
+  %mul2 = fsub fast double %7, %8
+  store double %mul2, double* %y, align 8
+  br label %if.end2
+
+; fsub (fneg((fmul x, y)), const)
+if.else2:                                         ; preds = %entry
+; CHECK-LABEL: if.else2:
+; CHECK:   %mul3 = fmul fast double %5, 3.000000e+00
+; CHECK-NEXT:   %neg = fsub fast double 0.000000e+00, %mul3
+; CHECK-NEXT:   %sub2 = fsub fast double %neg, 3.000000e+00
+  %mul3 = fmul fast double %6, 3.0000000e+00
+  %neg = fsub fast double 0.0000000e+00, %mul3
+  %sub2 = fsub fast double %neg, 3.0000000e+00
+  store double %sub2, double* %y, align 8
+  br label %if.end2
+
+if.end2:                                           ; preds = %if.else, %if.then
+  %9 = load double* %x, align 8
+  %10 = load double* %y, align 8
+  %add = fadd fast double %9, %10
+  %11 = load double* %a, align 8
+  %add2 = fadd fast double %add, %11
+  ret double %add2
+}
+