97 lines
2.5 KiB
LLVM
97 lines
2.5 KiB
LLVM
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; RUN: llc < %s -march=avr | FileCheck %s
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declare void @foo(i16*, i16*, i8*)
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define void @test1(i16 %x) {
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; CHECK-LABEL: test1:
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; CHECK: out 61, r28
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; SP copy
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; CHECK-NEXT: in [[SPCOPY1:r[0-9]+]], 61
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; CHECK-NEXT: in [[SPCOPY2:r[0-9]+]], 62
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; allocate first dynalloca
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; CHECK: in {{.*}}, 61
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; CHECK: in {{.*}}, 62
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; CHECK: sub
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; CHECK: sbc
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; CHECK: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, {{.*}}
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, {{.*}}
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; Test writes
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; CHECK: std Z+12, {{.*}}
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; CHECK: std Z+13, {{.*}}
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; CHECK: std Z+7, {{.*}}
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; CHECK-NOT: std
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; Test SP restore
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; CHECK: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, [[SPCOPY2]]
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, [[SPCOPY1]]
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%a = alloca [8 x i16]
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%vla = alloca i16, i16 %x
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%add = shl nsw i16 %x, 1
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%vla1 = alloca i8, i16 %add
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%arrayidx = getelementptr inbounds [8 x i16], [8 x i16]* %a, i16 0, i16 2
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store i16 3, i16* %arrayidx
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%arrayidx2 = getelementptr inbounds i16, i16* %vla, i16 6
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store i16 4, i16* %arrayidx2
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%arrayidx3 = getelementptr inbounds i8, i8* %vla1, i16 7
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store i8 44, i8* %arrayidx3
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%arraydecay = getelementptr inbounds [8 x i16], [8 x i16]* %a, i16 0, i16 0
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call void @foo(i16* %arraydecay, i16* %vla, i8* %vla1)
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ret void
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}
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declare void @foo2(i16*, i64, i64, i64)
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; Test that arguments are passed through pushes into the call instead of
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; allocating the call frame space in the prologue. Also test that SP is restored
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; after the call frame is restored and not before.
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define void @dynalloca2(i16 %x) {
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; CHECK-LABEL: dynalloca2:
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; CHECK: in [[SPCOPY1:r[0-9]+]], 61
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; CHECK: in [[SPCOPY2:r[0-9]+]], 62
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; Allocate stack space for call
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; CHECK: in {{.*}}, 61
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; CHECK: in {{.*}}, 62
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; CHECK: subi
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; CHECK: sbci
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; CHECK: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, {{.*}}
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, {{.*}}
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; Store values on the stack
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; CHECK: ldi r16, 0
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; CHECK: ldi r17, 0
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; CHECK: std Z+5, r16
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; CHECK: std Z+6, r17
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; CHECK: std Z+7, r16
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; CHECK: std Z+8, r17
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; CHECK: std Z+3, r16
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; CHECK: std Z+4, r17
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; CHECK: std Z+1, r16
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; CHECK: std Z+2, r17
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; CHECK: call
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; Call frame restore
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; CHECK-NEXT: in r30, 61
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; CHECK-NEXT: in r31, 62
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; CHECK-NEXT: adiw r30, 8
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; CHECK-NEXT: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, r31
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, r30
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; SP restore
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; CHECK: in r0, 63
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; CHECK-NEXT: cli
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; CHECK-NEXT: out 62, r7
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; CHECK-NEXT: out 63, r0
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; CHECK-NEXT: out 61, r6
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%vla = alloca i16, i16 %x
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call void @foo2(i16* %vla, i64 0, i64 0, i64 0)
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ret void
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}
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