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d89c86a2d9
When using -ffixed-x18, the x18 (or w18) register can safely be used with the "global register variable" GCC extension, but the backend fails to recognize it. Patch by Roland McGrath. Differential Revision: https://reviews.llvm.org/D31793 llvm-svn: 299799
15 lines
440 B
LLVM
15 lines
440 B
LLVM
; RUN: not llc -mtriple=aarch64-fuchsia -o - %s 2>&1 | FileCheck %s --check-prefix=ERROR
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; RUN: llc -mtriple=aarch64-fuchsia -mattr=+reserve-x18 -o - %s
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define void @set_x18(i64 %x) {
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entry:
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; FIXME: Include an allocatable-specific error message
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; ERROR: Invalid register name "x18".
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tail call void @llvm.write_register.i64(metadata !0, i64 %x)
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ret void
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}
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declare void @llvm.write_register.i64(metadata, i64) nounwind
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!0 = !{!"x18"}
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