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bdc6e663e7
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 llvm-svn: 296807
68 lines
1.5 KiB
LLVM
68 lines
1.5 KiB
LLVM
; RUN: llc < %s -march=msp430 | FileCheck %s
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target datalayout = "e-p:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:16:16"
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target triple = "msp430-generic-generic"
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define i16 @am1(i16* %a) nounwind {
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%1 = load i16, i16* %a
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ret i16 %1
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}
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; CHECK-LABEL: am1:
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; CHECK: mov.w 0(r12), r12
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@foo = external global i16
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define i16 @am2() nounwind {
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%1 = load i16, i16* @foo
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ret i16 %1
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}
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; CHECK-LABEL: am2:
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; CHECK: mov.w &foo, r12
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@bar = internal constant [2 x i8] [ i8 32, i8 64 ]
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define i8 @am3(i16 %n) nounwind {
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%1 = getelementptr [2 x i8], [2 x i8]* @bar, i16 0, i16 %n
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%2 = load i8, i8* %1
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ret i8 %2
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}
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; CHECK-LABEL: am3:
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; CHECK: mov.b bar(r12), r12
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define i16 @am4() nounwind {
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%1 = load volatile i16, i16* inttoptr(i16 32 to i16*)
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ret i16 %1
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}
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; CHECK-LABEL: am4:
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; CHECK: mov.w &32, r12
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define i16 @am5(i16* %a) nounwind {
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%1 = getelementptr i16, i16* %a, i16 2
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%2 = load i16, i16* %1
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ret i16 %2
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}
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; CHECK-LABEL: am5:
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; CHECK: mov.w 4(r12), r12
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%S = type { i16, i16 }
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@baz = common global %S zeroinitializer, align 1
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define i16 @am6() nounwind {
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%1 = load i16, i16* getelementptr (%S, %S* @baz, i32 0, i32 1)
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ret i16 %1
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}
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; CHECK-LABEL: am6:
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; CHECK: mov.w &baz+2, r12
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%T = type { i16, [2 x i8] }
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@duh = internal constant %T { i16 16, [2 x i8][i8 32, i8 64 ] }
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define i8 @am7(i16 %n) nounwind {
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%1 = getelementptr %T, %T* @duh, i32 0, i32 1
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%2 = getelementptr [2 x i8], [2 x i8]* %1, i16 0, i16 %n
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%3= load i8, i8* %2
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ret i8 %3
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}
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; CHECK-LABEL: am7:
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; CHECK: mov.b duh+2(r12), r12
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