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llvm-project/llvm/test/MC/AArch64/speculation-barriers.s

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[ARM][AArch64] Add CSDB speculation barrier instruction This adds the CSDB instruction, which is a new barrier instruction described by the whitepaper at [1]. This is in encoding space which was previously executed as a NOP, so it is available for all targets that have the relevant NOP encoding space. This matches the binutils behaviour for these instructions [2][3]. [1] https://developer.arm.com/support/security-update [2] https://sourceware.org/ml/binutils/2018-01/msg00116.html [3] https://sourceware.org/ml/binutils/2018-01/msg00120.html llvm-svn: 324324
2018-02-06 17:24:47 +08:00
// RUN: llvm-mc -triple aarch64-none-linux-gnu -show-encoding < %s | FileCheck %s
[AArch64][v8.5A] Add speculation barriers SSBB and PSSBB This adds two new barrier instructions which can be used to restrict speculative execution of load instructions. Patch by Pablo Barrio! Differential revision: https://reviews.llvm.org/D52483 llvm-svn: 343229
2018-09-28 00:09:05 +08:00
csdb
ssbb
pssbb
[ARM][AArch64] Add CSDB speculation barrier instruction This adds the CSDB instruction, which is a new barrier instruction described by the whitepaper at [1]. This is in encoding space which was previously executed as a NOP, so it is available for all targets that have the relevant NOP encoding space. This matches the binutils behaviour for these instructions [2][3]. [1] https://developer.arm.com/support/security-update [2] https://sourceware.org/ml/binutils/2018-01/msg00116.html [3] https://sourceware.org/ml/binutils/2018-01/msg00120.html llvm-svn: 324324
2018-02-06 17:24:47 +08:00
// CHECK: csdb // encoding: [0x9f,0x22,0x03,0xd5]
[AArch64][v8.5A] Add speculation barriers SSBB and PSSBB This adds two new barrier instructions which can be used to restrict speculative execution of load instructions. Patch by Pablo Barrio! Differential revision: https://reviews.llvm.org/D52483 llvm-svn: 343229
2018-09-28 00:09:05 +08:00
// CHECK: ssbb // encoding: [0x9f,0x30,0x03,0xd5]
// CHECK: pssbb // encoding: [0x9f,0x34,0x03,0xd5]