Add a hack (mirroring llvm-gcc) to pointer difference

codegen to compile:

int test(int *A, int *B) {
  return A-B;
}

into:

_test:
        movl 4(%esp), %eax
        subl 8(%esp), %eax
        sarl $2, %eax
        ret

instead of:

_test:
        movl 4(%esp), %eax
        subl 8(%esp), %eax
        movl %eax, %ecx
        sarl $31, %ecx
        shrl $30, %ecx
        addl %ecx, %eax
        sarl $2, %eax
        ret



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@39902 91177308-0d34-0410-b5e6-96231b3b80d8

0 files changed, 0 insertions, 0 deletions