diff options
Diffstat (limited to 'src/ortho')
| -rw-r--r-- | src/ortho/mcode/ortho_code-x86-abi.adb | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/src/ortho/mcode/ortho_code-x86-abi.adb b/src/ortho/mcode/ortho_code-x86-abi.adb index 2b0d778fa..981736dd9 100644 --- a/src/ortho/mcode/ortho_code-x86-abi.adb +++ b/src/ortho/mcode/ortho_code-x86-abi.adb @@ -74,8 +74,14 @@ package body Ortho_Code.X86.Abi is Abi.Inum := Abi.Inum + 1; end if; when Mode_Fp => - if Abi.Fnum <= Sse_Regs'Last (2) then - Reg := Sse_Regs (Flags.Win64, Abi.Fnum); + if Flags.Win64 then + -- On Win64, only the first 4 arguments are passed in regs. + if Abi.Inum < 4 then + Reg := Sse_Regs (True, Abi.Inum); + Abi.Inum := Abi.Inum + 1; + end if; + elsif Abi.Fnum <= Sse_Regs'Last (2) then + Reg := Sse_Regs (False, Abi.Fnum); Abi.Fnum := Abi.Fnum + 1; end if; when others => |