| ; RUN: llc -march=mips < %s | FileCheck --check-prefixes=ALL,O32 %s |
| ; RUN: llc -march=mipsel < %s | FileCheck --check-prefixes=ALL,O32 %s |
| |
| ; RUN-TODO: llc -march=mips64 -target-abi o32 < %s | FileCheck --check-prefixes=ALL,O32 %s |
| ; RUN-TODO: llc -march=mips64el -target-abi o32 < %s | FileCheck --check-prefixes=ALL,O32 %s |
| |
| ; RUN: llc -march=mips64 -target-abi n32 < %s | FileCheck --check-prefixes=ALL,N32 %s |
| ; RUN: llc -march=mips64el -target-abi n32 < %s | FileCheck --check-prefixes=ALL,N32 %s |
| |
| ; RUN: llc -march=mips64 -target-abi n64 < %s | FileCheck --check-prefixes=ALL,N64 %s |
| ; RUN: llc -march=mips64el -target-abi n64 < %s | FileCheck --check-prefixes=ALL,N64 %s |
| |
| ; Test that O32 correctly reserved space for the four arguments, even when |
| ; there aren't any as per section 5 of MD00305 (MIPS ABIs Described). |
| |
| declare void @foo() nounwind; |
| |
| define void @reserved_space() nounwind { |
| entry: |
| call void @foo() |
| ret void |
| } |
| |
| ; ALL-LABEL: reserved_space: |
| ; O32: addiu $sp, $sp, -24 |
| ; O32: sw $ra, 20($sp) |
| ; O32: lw $ra, 20($sp) |
| ; O32: addiu $sp, $sp, 24 |
| ; Despite pointers being 32-bit wide on N32, the return pointer is saved as a |
| ; 64-bit pointer. I've yet to find a documentation reference for this quirk but |
| ; this behaviour matches GCC so I have considered it to be correct. |
| ; N32: addiu $sp, $sp, -16 |
| ; N32: sd $ra, 8($sp) |
| ; N32: ld $ra, 8($sp) |
| ; N32: addiu $sp, $sp, 16 |
| ; N64: daddiu $sp, $sp, -16 |
| ; N64: sd $ra, 8($sp) |
| ; N64: ld $ra, 8($sp) |
| ; N64: daddiu $sp, $sp, 16 |