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b97911c37b
Only reserved registers can be read. Differential Revision: https://reviews.llvm.org/D137532
28 lines
728 B
LLVM
28 lines
728 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s --mtriple=loongarch64 | FileCheck %s
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define i64 @get_stack() nounwind {
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; CHECK-LABEL: get_stack:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: move $a0, $sp
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; CHECK-NEXT: ret
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entry:
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%sp = call i64 @llvm.read_register.i64(metadata !0)
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ret i64 %sp
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}
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define void @set_stack(i64 %val) nounwind {
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; CHECK-LABEL: set_stack:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: move $sp, $a0
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; CHECK-NEXT: ret
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entry:
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call void @llvm.write_register.i64(metadata !0, i64 %val)
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ret void
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}
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declare i64 @llvm.read_register.i64(metadata) nounwind
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declare void @llvm.write_register.i64(metadata, i64) nounwind
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!0 = !{!"$sp\00"}
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