1 ; RUN: llc -march=mips < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s 2 ; RUN: llc -march=mipsel < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s 3 4 ; RUN-TODO: llc -march=mips64 -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s 5 ; RUN-TODO: llc -march=mips64el -mattr=-n64,+o32 < %s | FileCheck --check-prefix=ALL --check-prefix=O32 %s 6 7 ; RUN: llc -march=mips64 -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s 8 ; RUN: llc -march=mips64el -mattr=-n64,+n32 < %s | FileCheck --check-prefix=ALL --check-prefix=N32 %s 9 10 ; RUN: llc -march=mips64 -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s 11 ; RUN: llc -march=mips64el -mattr=-n64,+n64 < %s | FileCheck --check-prefix=ALL --check-prefix=N64 %s 12 13 ; Test that O32 correctly reserved space for the four arguments, even when 14 ; there aren't any as per section 5 of MD00305 (MIPS ABIs Described). 15 16 declare void @foo() nounwind; 17 18 define void @reserved_space() nounwind { 19 entry: 20 tail call void @foo() 21 ret void 22 } 23 24 ; ALL-LABEL: reserved_space: 25 ; O32: addiu $sp, $sp, -24 26 ; O32: sw $ra, 20($sp) 27 ; O32: lw $ra, 20($sp) 28 ; O32: addiu $sp, $sp, 24 29 ; Despite pointers being 32-bit wide on N32, the return pointer is saved as a 30 ; 64-bit pointer. I've yet to find a documentation reference for this quirk but 31 ; this behaviour matches GCC so I have considered it to be correct. 32 ; N32: addiu $sp, $sp, -16 33 ; N32: sd $ra, 8($sp) 34 ; N32: ld $ra, 8($sp) 35 ; N32: addiu $sp, $sp, 16 36 ; N64: daddiu $sp, $sp, -16 37 ; N64: sd $ra, 8($sp) 38 ; N64: ld $ra, 8($sp) 39 ; N64: daddiu $sp, $sp, 16 40
