diff options
Diffstat (limited to 'llvm/lib/Target/X86/X86MCInstLower.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86MCInstLower.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86MCInstLower.cpp b/llvm/lib/Target/X86/X86MCInstLower.cpp index 18f9b3e2e2a..58033eeedc2 100644 --- a/llvm/lib/Target/X86/X86MCInstLower.cpp +++ b/llvm/lib/Target/X86/X86MCInstLower.cpp @@ -1038,8 +1038,8 @@ void X86AsmPrinter::LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI, X86MCInstLower &MCIL) { // We want to emit the following pattern: // + // .p2align 1, ... // .Lxray_sled_N: - // .palign 2, ... // jmp .tmpN // # 9 bytes worth of noops // .tmpN @@ -1051,8 +1051,8 @@ void X86AsmPrinter::LowerPATCHABLE_FUNCTION_ENTER(const MachineInstr &MI, // call <relative offset, 32-bits> // 5 bytes // auto CurSled = OutContext.createTempSymbol("xray_sled_", true); + OutStreamer->EmitCodeAlignment(2); OutStreamer->EmitLabel(CurSled); - OutStreamer->EmitCodeAlignment(4); auto Target = OutContext.createTempSymbol(); // Use a two-byte `jmp`. This version of JMP takes an 8-bit relative offset as @@ -1074,12 +1074,14 @@ void X86AsmPrinter::LowerPATCHABLE_RET(const MachineInstr &MI, // // We should emit the RET followed by sleds. // + // .p2align 1, ... // .Lxray_sled_N: // ret # or equivalent instruction // # 10 bytes worth of noops // // This just makes sure that the alignment for the next instruction is 2. auto CurSled = OutContext.createTempSymbol("xray_sled_", true); + OutStreamer->EmitCodeAlignment(2); OutStreamer->EmitLabel(CurSled); unsigned OpCode = MI.getOperand(0).getImm(); MCInst Ret; |
