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| author | Evan Cheng <evan.cheng@apple.com> | 2009-02-23 09:03:22 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2009-02-23 09:03:22 +0000 |
| commit | 242b38bae5d8eeadca0e0cf4777b3b285cb5eb01 (patch) | |
| tree | ae0affc5f4f97fe2f6e76ca717b3621b931bbf70 /lib/Target/X86/X86CallingConv.td | |
| parent | 932be21c081c837e4ac34a11a7ac0f06deac77fb (diff) | |
| download | llvm-242b38bae5d8eeadca0e0cf4777b3b285cb5eb01.tar.gz llvm-242b38bae5d8eeadca0e0cf4777b3b285cb5eb01.tar.bz2 llvm-242b38bae5d8eeadca0e0cf4777b3b285cb5eb01.tar.xz | |
Only v1i16 (i.e. _m64) is returned via RAX / RDX.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65313 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86CallingConv.td')
| -rw-r--r-- | lib/Target/X86/X86CallingConv.td | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/lib/Target/X86/X86CallingConv.td b/lib/Target/X86/X86CallingConv.td index 80bdbd0b1c..d2fc86398e 100644 --- a/lib/Target/X86/X86CallingConv.td +++ b/lib/Target/X86/X86CallingConv.td @@ -72,9 +72,11 @@ def RetCC_X86_64_C : CallingConv<[ CCIfType<[f32], CCAssignToReg<[XMM0, XMM1]>>, CCIfType<[f64], CCAssignToReg<[XMM0, XMM1]>>, - // MMX vector types are always returned in RAX. This seems to disagree with - // ABI documentation but is bug compatible with gcc. - CCIfType<[v8i8, v4i16, v2i32, v1i64, v2f32], CCAssignToReg<[RAX]>>, + // MMX vector types are always returned in XMM0 except for v1i64 which is + // returned in RAX. This disagrees with ABI documentation but is bug + // compatible with gcc. + CCIfType<[v1i64], CCAssignToReg<[RAX]>>, + CCIfType<[v8i8, v4i16, v2i32, v2f32], CCAssignToReg<[XMM0, XMM1]>>, CCDelegateTo<RetCC_X86Common> ]>; |