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[SystemZ] Use VT (not ArgVT) for SlotVT in LowerCall(). #82475

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Merged
merged 1 commit into from
Feb 21, 2024
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[SystemZ] Use VT (not ArgVT) for SlotVT in LowerCall(). #82475

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2 changes: 1 addition & 1 deletion llvm/lib/Target/SystemZ/SystemZISelLowering.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -1923,7 +1923,7 @@ SystemZTargetLowering::LowerCall(CallLoweringInfo &CLI,
unsigned N = getNumRegistersForCallingConv(Ctx, CLI.CallConv, OrigArgVT);
SlotVT = EVT::getIntegerVT(Ctx, PartVT.getSizeInBits() * N);
} else {
SlotVT = Outs[I].ArgVT;
SlotVT = Outs[I].VT;
}
SDValue SpillSlot = DAG.CreateStackTemporary(SlotVT);
int FI = cast<FrameIndexSDNode>(SpillSlot)->getIndex();
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18 changes: 18 additions & 0 deletions llvm/test/CodeGen/SystemZ/frame-29.ll
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@@ -0,0 +1,18 @@
; RUN: llc %s -o - -mtriple=s390x-linux-gnu -mcpu=z16 -print-after=finalize-isel 2>&1 | FileCheck %s
;
; Test that the correct space is allocated for the outgoing stack argument.

declare void @bar(i72 %Arg);

define void @foo() {
; CHECK-LABEL: # Machine code for function foo: IsSSA, TracksLiveness
; CHECK-NEXT: Frame Objects:
; CHECK-NEXT: fi#0: size=1, align=2, at location [SP]
; CHECK-NEXT: fi#1: size=16, align=8, at location [SP]

; CHECK-LABEL: foo:
; CHECK: aghi %r15, -184
%1 = alloca i8, align 2
tail call fastcc void @bar(i72 2097168)
ret void
}