6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-02-19 06:31:18 +00:00
Code Issues Projects Releases Wiki Activity

Update.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36653 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Bill Wendling 2007-05-02 21:42:20 +00:00
parent 3e15bf33e0
commit 4b693b01fb
1 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
lib/Target/X86/README-MMX.txt
View File

@ -40,3 +40,30 @@ _qux:
movl %edx, 4(%eax) movl %edx, 4(%eax)
addl $12, %esp addl $12, %esp
ret $4 ret $4
//===---------------------------------------------------------------------===//
int main() {
__m64 A[1] = { _mm_cvtsi32_si64(1) };
__m64 B[1] = { _mm_cvtsi32_si64(10) };
__m64 sum = _mm_cvtsi32_si64(0);
sum = __builtin_ia32_paddq(__builtin_ia32_paddq(A[0], B[0]), sum);
printf("Sum = %d\n", _mm_cvtsi64_si32(sum));
return 0;
}
Generates:
movl $11, %eax
### movd %eax, %mm0
### movq %mm0, 8(%esp)
### movl 8(%esp), %eax
movl %eax, 4(%esp)
movl $_str, (%esp)
call L_printf$stub
xorl %eax, %eax
addl $28, %esp
These instructions are unnecessary.