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https://github.com/RPCS3/llvm.git
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Evgeniy Stepanov
4fca50d47d
Implement IR intrinsics for stack tagging. Generated code is very unoptimized for now. Two special intrinsics, llvm.aarch64.irg.sp and llvm.aarch64.tagp are used to implement a tagged stack frame pointer in a virtual register. Differential Revision: https://reviews.llvm.org/D64172 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@366360 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
900 B
LLVM
43 lines
900 B
LLVM
; RUN: llc < %s -mtriple=aarch64 -mattr=+mte | FileCheck %s
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define i8* @irg_imm16(i8* %p) {
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entry:
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; CHECK-LABEL: irg_imm16:
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; CHECK: mov w[[R:[0-9]+]], #16
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; CHECK: irg x0, x0, x[[R]]
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; CHECK: ret
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%q = call i8* @llvm.aarch64.irg(i8* %p, i64 16)
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ret i8* %q
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}
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define i8* @irg_imm0(i8* %p) {
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entry:
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; CHECK-LABEL: irg_imm0:
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; CHECK: irg x0, x0{{$}}
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; CHECK: ret
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%q = call i8* @llvm.aarch64.irg(i8* %p, i64 0)
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ret i8* %q
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}
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define i8* @irg_reg(i8* %p, i64 %ex) {
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entry:
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; CHECK-LABEL: irg_reg:
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; CHECK: irg x0, x0, x1
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; CHECK: ret
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%q = call i8* @llvm.aarch64.irg(i8* %p, i64 %ex)
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ret i8* %q
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}
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; undef argument in irg is treated specially
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define i8* @irg_sp() {
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entry:
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; CHECK-LABEL: irg_sp:
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; CHECK: irg x0, sp{{$}}
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; CHECK: ret
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%q = call i8* @llvm.aarch64.irg.sp(i64 0)
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ret i8* %q
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}
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declare i8* @llvm.aarch64.irg(i8* %p, i64 %exclude)
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declare i8* @llvm.aarch64.irg.sp(i64 %exclude)
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