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ae0244420d
Summary: Specifying X[8-15,18] registers as callee-saved is used to support CONFIG_ARM64_LSE_ATOMICS in Linux kernel. As part of this patch we: - use custom CSR list/mask when user specifies custom CSRs - update Machine Register Info's list of CSRs with additional custom CSRs in LowerCall and LowerFormalArguments. Reviewers: srhines, nickdesaulniers, efriedma, javed.absar Reviewed By: nickdesaulniers Subscribers: kristof.beyls, jfb, llvm-commits Differential Revision: https://reviews.llvm.org/D52216 llvm-svn: 342824
142 lines
4.2 KiB
LLVM
142 lines
4.2 KiB
LLVM
; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x8 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X8
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x9 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X9
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x10 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X10
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x11 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X11
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x12 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X12
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x13 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X13
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x14 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X14
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x15 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X15
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; RUN: llc -mtriple=arm64-linux-gnu -mattr=+call-saved-x18 -o - %s \
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; RUN: | FileCheck %s --check-prefix=CHECK-SAVED-X18
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; Test all call-saved-x# options together.
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; RUN: llc -mtriple=arm64-linux-gnu \
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; RUN: -mattr=+call-saved-x8 \
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; RUN: -mattr=+call-saved-x9 \
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; RUN: -mattr=+call-saved-x10 \
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; RUN: -mattr=+call-saved-x11 \
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; RUN: -mattr=+call-saved-x12 \
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; RUN: -mattr=+call-saved-x13 \
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; RUN: -mattr=+call-saved-x14 \
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; RUN: -mattr=+call-saved-x15 \
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; RUN: -mattr=+call-saved-x18 \
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; RUN: -o - %s | FileCheck %s \
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; RUN: --check-prefix=CHECK-SAVED-ALL
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; Test GlobalISel.
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; RUN: llc -mtriple=arm64-linux-gnu \
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; RUN: -mattr=+call-saved-x8 \
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; RUN: -mattr=+call-saved-x9 \
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; RUN: -mattr=+call-saved-x10 \
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; RUN: -mattr=+call-saved-x11 \
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; RUN: -mattr=+call-saved-x12 \
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; RUN: -mattr=+call-saved-x13 \
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; RUN: -mattr=+call-saved-x14 \
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; RUN: -mattr=+call-saved-x15 \
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; RUN: -mattr=+call-saved-x18 \
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; RUN: -global-isel \
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; RUN: -o - %s | FileCheck %s \
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; RUN: --check-prefix=CHECK-SAVED-ALL
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; Used to exhaust the supply of GPRs.
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@var = global [30 x i64] zeroinitializer
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; Check that callee preserves additional CSRs.
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define void @callee() {
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; CHECK-LABEL: callee
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; CHECK-SAVED-X8: str x8, [sp
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; CHECK-SAVED-X9: str x9, [sp
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; CHECK-SAVED-X10: str x10, [sp
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; CHECK-SAVED-X11: str x11, [sp
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; CHECK-SAVED-X12: str x12, [sp
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; CHECK-SAVED-X13: str x13, [sp
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; CHECK-SAVED-X14: str x14, [sp
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; CHECK-SAVED-X15: str x15, [sp
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; CHECK-SAVED-X18: str x18, [sp
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; CHECK-SAVED-ALL: str x18, [sp
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; CHECK-SAVED-ALL-NEXT: stp x15, x14, [sp
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; CHECK-SAVED-ALL-NEXT: stp x13, x12, [sp
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; CHECK-SAVED-ALL-NEXT: stp x11, x10, [sp
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; CHECK-SAVED-ALL-NEXT: stp x9, x8, [sp
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%val = load volatile [30 x i64], [30 x i64]* @var
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store volatile [30 x i64] %val, [30 x i64]* @var
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; CHECK-SAVED-ALL: ldp x9, x8, [sp
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; CHECK-SAVED-ALL-NEXT: ldp x11, x10, [sp
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; CHECK-SAVED-ALL-NEXT: ldp x13, x12, [sp
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; CHECK-SAVED-ALL-NEXT: ldp x15, x14, [sp
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; CHECK-SAVED-ALL-NEXT: ldr x18, [sp
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; CHECK-SAVED-X8: ldr x8, [sp
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; CHECK-SAVED-X9: ldr x9, [sp
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; CHECK-SAVED-X10: ldr x10, [sp
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; CHECK-SAVED-X11: ldr x11, [sp
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; CHECK-SAVED-X12: ldr x12, [sp
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; CHECK-SAVED-X13: ldr x13, [sp
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; CHECK-SAVED-X14: ldr x14, [sp
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; CHECK-SAVED-X15: ldr x15, [sp
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; CHECK-SAVED-X18: ldr x18, [sp
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ret void
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}
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; Check that caller doesn't shy away from allocating additional CSRs.
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define void @caller() {
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; CHECK-LABEL: caller
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%val = load volatile [30 x i64], [30 x i64]* @var
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; CHECK-SAVED-X8: adrp x8, var
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; CHECK-SAVED-X9: adrp x9, var
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; CHECK-SAVED-X10: adrp x10, var
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; CHECK-SAVED-X11: adrp x11, var
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; CHECK-SAVED-X12: adrp x12, var
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; CHECK-SAVED-X13: adrp x13, var
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; CHECK-SAVED-X14: adrp x14, var
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; CHECK-SAVED-X15: adrp x15, var
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; CHECK-SAVED-X18: adrp x18, var
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; CHECK-SAVED-ALL: adrp x8, var
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; CHECK-SAVED-ALL-DAG: ldr x9
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; CHECK-SAVED-ALL-DAG: ldr x10
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; CHECK-SAVED-ALL-DAG: ldr x11
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; CHECK-SAVED-ALL-DAG: ldr x12
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; CHECK-SAVED-ALL-DAG: ldr x13
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; CHECK-SAVED-ALL-DAG: ldr x14
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; CHECK-SAVED-ALL-DAG: ldr x15
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; CHECK-SAVED-ALL-DAG: ldr x18
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call void @callee()
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; CHECK: bl callee
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store volatile [30 x i64] %val, [30 x i64]* @var
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; CHECK-SAVED-ALL-DAG: str x9
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; CHECK-SAVED-ALL-DAG: str x10
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; CHECK-SAVED-ALL-DAG: str x11
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; CHECK-SAVED-ALL-DAG: str x12
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; CHECK-SAVED-ALL-DAG: str x13
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; CHECK-SAVED-ALL-DAG: str x14
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; CHECK-SAVED-ALL-DAG: str x15
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; CHECK-SAVED-ALL-DAG: str x18
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ret void
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}
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