| ; 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, double* %y, align 8 |
| %cmp = fcmp oeq double %0, 0.000000e+00 |
| %1 = load double, 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, 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, double* %a, align 8 |
| %mul1 = fmul fast double %1, %4 |
| %sub1 = fsub fast double %mul1, %0 |
| %gep1 = getelementptr double, double* %y, i32 1 |
| store double %sub1, double* %gep1, align 8 |
| br label %if.end |
| |
| if.end: ; preds = %if.else, %if.then |
| %5 = load double, double* %y, align 8 |
| %cmp2 = fcmp oeq double %5, 2.000000e+00 |
| %6 = load double, 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, 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, double* %x, align 8 |
| %10 = load double, double* %y, align 8 |
| %add = fadd fast double %9, %10 |
| %11 = load double, double* %a, align 8 |
| %add2 = fadd fast double %add, %11 |
| ret double %add2 |
| } |
| |