LLVM smul.with.overflow

@llvm.smul.with.overflow.i32(i32 %x, i32 %y)

This function checks if a multiplication between %x and %y results in an overflow error and returns an Aggregate of (i32, bool)

Example Utilization

start:
  %0 = call { i32, i1 } @llvm.smul.with.overflow.i32(i32 %x, i32 %x)
  %_2.0 = extractvalue { i32, i1 } %0, 0
  %_2.1 = extractvalue { i32, i1 } %0, 1
  %1 = call i1 @llvm.expect.i1(i1 %_2.1, i1 false) ; expects false in %2.1
  br i1 %1, label %panic, label %bb1
 
panic:
  ; some panic function here
  unreachable
bb1:
  ; some code here