1 ; RUN: opt < %s -mtriple=aarch64-linux-gnu -simplifycfg -enable-unsafe-fp-math -S >%t 2 ; RUN: FileCheck %s < %t 3 ; ModuleID = 't.cc' 4 5 ; Function Attrs: nounwind 6 define double @_Z3fooRdS_S_S_(double* dereferenceable(8) %x, double* dereferenceable(8) %y, double* dereferenceable(8) %a) #0 { 7 entry: 8 %0 = load double, double* %y, align 8 9 %cmp = fcmp oeq double %0, 0.000000e+00 10 %1 = load double, double* %x, align 8 11 br i1 %cmp, label %if.then, label %if.else 12 13 ; fadd (const, (fmul x, y)) 14 if.then: ; preds = %entry 15 ; CHECK-LABEL: if.then: 16 ; CHECK: %3 = fmul fast double %1, %2 17 ; CHECK-NEXT: %mul = fadd fast double 1.000000e+00, %3 18 %2 = load double, double* %a, align 8 19 %3 = fmul fast double %1, %2 20 %mul = fadd fast double 1.000000e+00, %3 21 store double %mul, double* %y, align 8 22 br label %if.end 23 24 ; fsub ((fmul x, y), z) 25 if.else: ; preds = %entry 26 ; CHECK-LABEL: if.else: 27 ; CHECK: %mul1 = fmul fast double %1, %2 28 ; CHECK-NEXT: %sub1 = fsub fast double %mul1, %0 29 %4 = load double, double* %a, align 8 30 %mul1 = fmul fast double %1, %4 31 %sub1 = fsub fast double %mul1, %0 32 store double %sub1, double* %y, align 8 33 br label %if.end 34 35 if.end: ; preds = %if.else, %if.then 36 %5 = load double, double* %y, align 8 37 %cmp2 = fcmp oeq double %5, 2.000000e+00 38 %6 = load double, double* %x, align 8 39 br i1 %cmp2, label %if.then2, label %if.else2 40 41 ; fsub (x, (fmul y, z)) 42 if.then2: ; preds = %entry 43 ; CHECK-LABEL: if.then2: 44 ; CHECK: %7 = fmul fast double %5, 3.000000e+00 45 ; CHECK-NEXT: %mul2 = fsub fast double %6, %7 46 %7 = load double, double* %a, align 8 47 %8 = fmul fast double %6, 3.0000000e+00 48 %mul2 = fsub fast double %7, %8 49 store double %mul2, double* %y, align 8 50 br label %if.end2 51 52 ; fsub (fneg((fmul x, y)), const) 53 if.else2: ; preds = %entry 54 ; CHECK-LABEL: if.else2: 55 ; CHECK: %mul3 = fmul fast double %5, 3.000000e+00 56 ; CHECK-NEXT: %neg = fsub fast double 0.000000e+00, %mul3 57 ; CHECK-NEXT: %sub2 = fsub fast double %neg, 3.000000e+00 58 %mul3 = fmul fast double %6, 3.0000000e+00 59 %neg = fsub fast double 0.0000000e+00, %mul3 60 %sub2 = fsub fast double %neg, 3.0000000e+00 61 store double %sub2, double* %y, align 8 62 br label %if.end2 63 64 if.end2: ; preds = %if.else, %if.then 65 %9 = load double, double* %x, align 8 66 %10 = load double, double* %y, align 8 67 %add = fadd fast double %9, %10 68 %11 = load double, double* %a, align 8 69 %add2 = fadd fast double %add, %11 70 ret double %add2 71 } 72 73
