diff options
| -rw-r--r-- | lib/Target/X86/README.txt | 24 |
1 files changed, 0 insertions, 24 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index e140c147c6..530a3f26be 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -1554,30 +1554,6 @@ abs: //===---------------------------------------------------------------------===// Consider: - -#include <inttypes.h> -uint64_t a; -uint16_t b; -uint64_t mul(void) { - return a * b; -} - -Currently, we generate the following: - -mul: - movzwl b, %ecx - movl %ecx, %eax - mull a - imull a+4, %ecx - addl %edx, %ecx - movl %ecx, %edx - ret - -llvm should be able to commute the addl so that the movl isn't necessary. - -//===---------------------------------------------------------------------===// - -Consider: int test(unsigned long a, unsigned long b) { return -(a < b); } We currently compile this to: |