diff options
| author | Dan Gohman <gohman@apple.com> | 2010-10-12 18:00:49 +0000 |
|---|---|---|
| committer | Dan Gohman <gohman@apple.com> | 2010-10-12 18:00:49 +0000 |
| commit | 320afb8c818b5cd5b9d4fcd0dba83ba3384ed4b4 (patch) | |
| tree | e9f21f0a487672547e31382ef3144e7f392a6035 /lib/Target/X86/X86InstrCompiler.td | |
| parent | 8e157302f4991b08a625b05238e01d12c82a2976 (diff) | |
| download | external_llvm-320afb8c818b5cd5b9d4fcd0dba83ba3384ed4b4.zip external_llvm-320afb8c818b5cd5b9d4fcd0dba83ba3384ed4b4.tar.gz external_llvm-320afb8c818b5cd5b9d4fcd0dba83ba3384ed4b4.tar.bz2 | |
Initial va_arg support for x86-64. Patch by David Meyer!
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@116319 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86InstrCompiler.td')
| -rw-r--r-- | lib/Target/X86/X86InstrCompiler.td | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Target/X86/X86InstrCompiler.td b/lib/Target/X86/X86InstrCompiler.td index 4fdbdc5..6bfd605 100644 --- a/lib/Target/X86/X86InstrCompiler.td +++ b/lib/Target/X86/X86InstrCompiler.td @@ -78,6 +78,17 @@ def VASTART_SAVE_XMM_REGS : I<0, Pseudo, imm:$regsavefi, imm:$offset)]>; +// The VAARG_64 pseudo-instruction takes the address of the va_list, +// and places the address of the next argument into a register. +let Defs = [EFLAGS] in +def VAARG_64 : I<0, Pseudo, + (outs GR64:$dst), + (ins i8mem:$ap, i32imm:$size, i8imm:$mode, i32imm:$align), + "#VAARG_64 $dst, $ap, $size, $mode, $align", + [(set GR64:$dst, + (X86vaarg64 addr:$ap, imm:$size, imm:$mode, imm:$align)), + (implicit EFLAGS)]>; + // Dynamic stack allocation yields _alloca call for Cygwin/Mingw targets. Calls // to _alloca is needed to probe the stack when allocating more than 4k bytes in // one go. Touching the stack at 4K increments is necessary to ensure that the |