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c5a81e8618
This patch adds support for struct return values to the MSP430 target backend. It also reverses the order of argument and return registers in the calling convention to bring it into closer alignment with the published EABI from TI. Patch by Andrew Wygle (awygle). Differential Revision: https://reviews.llvm.org/D29069 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@296807 91177308-0d34-0410-b5e6-96231b3b80d8
27 lines
684 B
LLVM
27 lines
684 B
LLVM
; RUN: llc < %s | FileCheck %s
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target datalayout = "e-p:16:16:16-i8:8:8-i16:16:16-i32:16:32-n8:16"
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target triple = "msp430---elf"
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%struct.Foo = type { i16, i16, i16 }
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@foo = global %struct.Foo { i16 1, i16 2, i16 3 }, align 2
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define i16 @callee(%struct.Foo* byval %f) nounwind {
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entry:
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; CHECK-LABEL: callee:
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; CHECK: mov.w 2(r1), r12
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%0 = getelementptr inbounds %struct.Foo, %struct.Foo* %f, i32 0, i32 0
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%1 = load i16, i16* %0, align 2
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ret i16 %1
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}
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define void @caller() nounwind {
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entry:
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; CHECK-LABEL: caller:
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; CHECK: mov.w &foo+4, 4(r1)
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; CHECK-NEXT: mov.w &foo+2, 2(r1)
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; CHECK-NEXT: mov.w &foo, 0(r1)
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%call = call i16 @callee(%struct.Foo* byval @foo)
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ret void
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}
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