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[RISCV] Remove Last Traces of User Interrupts (#129300)

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These were left over from when Craig removed
`__attribute__((interrupt("user")))` support in
05d0caef6081e1a6cb23a5a5afe43dc82e8ca558.

The tests change "interrupt"="user" into "interrupt"="machine" as they
are still intending to be interrupt tests. ISelLowering will now reject
"interrupt"="user". The docs no longer mention "user" as a possible
interrupt attribute argument.
This commit is contained in:
Sam Elliott 2025-03-04 11:36:16 -08:00 committed by GitHub
parent f9a6ea4489
commit ee4bc5a8ca
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4 changed files with 6 additions and 6 deletions
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4
clang/include/clang/Basic/AttrDocs.td
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@ -2828,8 +2828,8 @@ targets. This attribute may be attached to a function definition and instructs
the backend to generate appropriate function entry/exit code so that it can be
used directly as an interrupt service routine.
Permissible values for this parameter are ``user``, ``supervisor``,
and ``machine``. If there is no parameter, then it defaults to machine.
Permissible values for this parameter are ``supervisor`` and ``machine``. If
there is no parameter, then it defaults to ``machine``.
Repeated interrupt attribute on the same declaration will cause a warning
to be emitted. In case of repeated declarations, the last one prevails.

2
llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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@ -20831,7 +20831,7 @@ SDValue RISCVTargetLowering::LowerFormalArguments(
StringRef Kind =
MF.getFunction().getFnAttribute("interrupt").getValueAsString();
if (!(Kind == "user" || Kind == "supervisor" || Kind == "machine"))
if (!(Kind == "supervisor" || Kind == "machine"))
report_fatal_error(
"Function interrupt attribute argument not supported!");
}

2
llvm/test/CodeGen/RISCV/lpad.ll
View File

@ -279,7 +279,7 @@ define internal void @internal2() {
}
; Check interrupt function does not need landing pad.
define void @interrupt() "interrupt"="user" {
define void @interrupt() "interrupt"="machine" {
; CHECK-LABEL: interrupt:
; CHECK: # %bb.0:
; CHECK-NEXT: mret

4
llvm/test/CodeGen/RISCV/push-pop-popret.ll
View File

@ -1769,7 +1769,7 @@ define void @alloca(i32 %n) {
declare i32 @foo_test_irq(...)
@var_test_irq = global [32 x i32] zeroinitializer
define void @foo_with_irq() "interrupt"="user" {
define void @foo_with_irq() "interrupt"="machine" {
; RV32IZCMP-LABEL: foo_with_irq:
; RV32IZCMP: # %bb.0:
; RV32IZCMP-NEXT: cm.push {ra}, -64
@ -2273,7 +2273,7 @@ define void @foo_no_irq() {
ret void
}
define void @callee_with_irq() "interrupt"="user" {
define void @callee_with_irq() "interrupt"="machine" {
; RV32IZCMP-LABEL: callee_with_irq:
; RV32IZCMP: # %bb.0:
; RV32IZCMP-NEXT: cm.push {ra, s0-s11}, -112