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