Print value of __m128 datatype in gdb debugger
c++, gdb, intrinsics, simd, sse
Solution
It's a pain, but I usually do it like this:
`gdb> p *(float *)&v@4`
This is assuming that `v` is `__m128`. You can apply the same principle for e.g. an `__m128i` vector of `unsigned char`:
`gdb> p /x *(unsigned char *)&v@16`
Problem
Is there any way to print the value of a variable of datatype `__m128` (used for Intel SSE intrinsics) directly in GDB? The command `print $myVariable` works fine for `int` and `float` but not for `__m128`.