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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
55 lines
1.4 KiB
LLVM
55 lines
1.4 KiB
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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; Function Attrs: nounwind
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define i16 @test(i16 %i) #0 {
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entry:
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; CHECK-LABEL: test:
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%retval = alloca i16, align 2
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%i.addr = alloca i16, align 2
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store i16 %i, i16* %i.addr, align 2
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%0 = load i16, i16* %i.addr, align 2
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; CHECK: mov.w #2, r13
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; CHECK: call #__mulhi3hw_noint
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; CHECK: br .LJTI0_0(r12)
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switch i16 %0, label %sw.default [
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i16 0, label %sw.bb
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i16 1, label %sw.bb1
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i16 2, label %sw.bb2
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i16 3, label %sw.bb3
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]
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sw.bb: ; preds = %entry
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store i16 0, i16* %retval
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br label %return
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sw.bb1: ; preds = %entry
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store i16 1, i16* %retval
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br label %return
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sw.bb2: ; preds = %entry
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store i16 2, i16* %retval
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br label %return
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sw.bb3: ; preds = %entry
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store i16 3, i16* %retval
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br label %return
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sw.default: ; preds = %entry
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store i16 2, i16* %retval
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br label %return
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return: ; preds = %sw.default, %sw.bb3, %sw.bb2, %sw.bb1, %sw.bb
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%1 = load i16, i16* %retval
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ret i16 %1
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; CHECK: ret
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}
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; CHECK: .LJTI0_0:
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; CHECK-NEXT: .short .LBB0_2
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; CHECK-NEXT: .short .LBB0_4
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; CHECK-NEXT: .short .LBB0_3
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; CHECK-NEXT: .short .LBB0_5
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