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[X86] Adjust nop emission by compiler to consider target decode limitations
The primary motivation of this change is to bring the code more closely in sync behavior wise with the assembler's version of nop emission. I'd like to eventually factor them into one, but that's hard to do when one has features the other doesn't. The longest encodeable nop on x86 is 15 bytes, but many processors - for instance all intel chips - can't decode the 15 byte form efficiently. On those processors, it's better to use either a 10 byte or 11 byte sequence depending.
This commit is contained in:
Philip Reames
parent
d59f41ce54
commit
01cf1a3805
@ -1031,6 +1031,20 @@ void X86AsmPrinter::LowerTlsAddr(X86MCInstLower &MCInstLowering,
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}
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}
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/// Return the longest nop which can be efficiently decoded for the given
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/// target cpu. 15-bytes is the longest single NOP instruction, but some
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/// platforms can't decode the longest forms efficiently.
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static unsigned MaxLongNopLength(const MCSubtargetInfo &STI) {
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uint64_t MaxNopLength = 10;
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if (STI.getFeatureBits()[X86::ProcIntelSLM])
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MaxNopLength = 7;
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else if (STI.getFeatureBits()[X86::FeatureFast15ByteNOP])
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MaxNopLength = 15;
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else if (STI.getFeatureBits()[X86::FeatureFast11ByteNOP])
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MaxNopLength = 11;
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return MaxNopLength;
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}
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/// Emit the largest nop instruction smaller than or equal to \p NumBytes
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/// bytes. Return the size of nop emitted.
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static unsigned EmitNop(MCStreamer &OS, unsigned NumBytes, bool Is64Bit,
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@ -1041,6 +1055,9 @@ static unsigned EmitNop(MCStreamer &OS, unsigned NumBytes, bool Is64Bit,
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return 1;
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}
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// Cap a single nop emission at the profitable value for the target
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NumBytes = std::min(NumBytes, MaxLongNopLength(STI));
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unsigned NopSize;
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unsigned Opc, BaseReg, ScaleVal, IndexReg, Displacement, SegmentReg;
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IndexReg = Displacement = SegmentReg = 0;
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@ -69,12 +69,8 @@ define void @patchpoint(i64 %a, i64 %b) {
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; CHECK-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-NEXT: #noautopadding
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; CHECK-NEXT: .Ltmp2:
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax,%rax)
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; CHECK-NEXT: #autopadding
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: .cfi_def_cfa %rsp, 8
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@ -1,198 +1,304 @@
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=corei7 | FileCheck %s
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=znver1 | FileCheck --check-prefix=CHECK-AMD %s
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; Check that we get a fast sequence of nops on each platform.
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define void @nop_test() {
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entry:
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; CHECK-LABEL: nop_test:
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; CHECK: nop
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; CHECK: xchgw %ax, %ax
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; CHECK: nopl (%rax)
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; CHECK: nopl 8(%rax)
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; CHECK: nopl 8(%rax,%rax)
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; CHECK: nopw 8(%rax,%rax)
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; CHECK: nopl 512(%rax)
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; CHECK: nopl 512(%rax,%rax)
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; CHECK: nopw 512(%rax,%rax)
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; CHECK: nopw %cs:512(%rax,%rax)
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; 11
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; CHECK: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 12
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 13
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 14
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 15
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 16
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nop
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; 17
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: xchgw %ax, %ax
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; 18
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl (%rax)
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; 19
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax)
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; 20
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax,%rax)
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; 21
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw 8(%rax,%rax)
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; 22
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 512(%rax)
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; 23
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 512(%rax,%rax)
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; 24
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw 512(%rax,%rax)
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; 25
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 26
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 27
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 28
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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;29
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; 30
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; CHECK: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: .byte 102
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK: ## %bb.0: ## %entry
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; CHECK-NEXT: pushq %rbp
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset %rbp, -16
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; CHECK-NEXT: movq %rsp, %rbp
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; CHECK-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-NEXT: Ltmp0:
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; CHECK-NEXT: Ltmp1:
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; CHECK-NEXT: nop
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; CHECK-NEXT: Ltmp2:
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; CHECK-NEXT: xchgw %ax, %ax
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; CHECK-NEXT: Ltmp3:
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; CHECK-NEXT: nopl (%rax)
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; CHECK-NEXT: Ltmp4:
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; CHECK-NEXT: nopl 8(%rax)
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; CHECK-NEXT: Ltmp5:
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; CHECK-NEXT: nopl 8(%rax,%rax)
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; CHECK-NEXT: Ltmp6:
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; CHECK-NEXT: nopw 8(%rax,%rax)
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; CHECK-NEXT: Ltmp7:
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; CHECK-NEXT: nopl 512(%rax)
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; CHECK-NEXT: Ltmp8:
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; CHECK-NEXT: nopl 512(%rax,%rax)
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; CHECK-NEXT: Ltmp9:
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; CHECK-NEXT: nopw 512(%rax,%rax)
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; CHECK-NEXT: Ltmp10:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: Ltmp11:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nop
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; CHECK-NEXT: Ltmp12:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: xchgw %ax, %ax
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; CHECK-NEXT: Ltmp13:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl (%rax)
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; CHECK-NEXT: Ltmp14:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax)
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; CHECK-NEXT: Ltmp15:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax,%rax)
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; CHECK-NEXT: Ltmp16:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw 8(%rax,%rax)
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; CHECK-NEXT: Ltmp17:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 512(%rax)
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; CHECK-NEXT: Ltmp18:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 512(%rax,%rax)
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; CHECK-NEXT: Ltmp19:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw 512(%rax,%rax)
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; CHECK-NEXT: Ltmp20:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: Ltmp21:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nop
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; CHECK-NEXT: Ltmp22:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: xchgw %ax, %ax
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; CHECK-NEXT: Ltmp23:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl (%rax)
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; CHECK-NEXT: Ltmp24:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax)
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; CHECK-NEXT: Ltmp25:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 8(%rax,%rax)
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; CHECK-NEXT: Ltmp26:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw 8(%rax,%rax)
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; CHECK-NEXT: Ltmp27:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 512(%rax)
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; CHECK-NEXT: Ltmp28:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopl 512(%rax,%rax)
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; CHECK-NEXT: Ltmp29:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw 512(%rax,%rax)
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; CHECK-NEXT: Ltmp30:
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-NEXT: Ltmp31:
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; CHECK-NEXT: popq %rbp
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; CHECK-NEXT: retq
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;
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; CHECK-AMD-LABEL: nop_test:
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; CHECK-AMD: ## %bb.0: ## %entry
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; CHECK-AMD-NEXT: pushq %rbp
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; CHECK-AMD-NEXT: .cfi_def_cfa_offset 16
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; CHECK-AMD-NEXT: .cfi_offset %rbp, -16
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; CHECK-AMD-NEXT: movq %rsp, %rbp
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; CHECK-AMD-NEXT: .cfi_def_cfa_register %rbp
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; CHECK-AMD-NEXT: Ltmp0:
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; CHECK-AMD-NEXT: Ltmp1:
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; CHECK-AMD-NEXT: nop
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; CHECK-AMD-NEXT: Ltmp2:
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; CHECK-AMD-NEXT: xchgw %ax, %ax
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; CHECK-AMD-NEXT: Ltmp3:
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; CHECK-AMD-NEXT: nopl (%rax)
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; CHECK-AMD-NEXT: Ltmp4:
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; CHECK-AMD-NEXT: nopl 8(%rax)
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; CHECK-AMD-NEXT: Ltmp5:
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; CHECK-AMD-NEXT: nopl 8(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp6:
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; CHECK-AMD-NEXT: nopw 8(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp7:
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; CHECK-AMD-NEXT: nopl 512(%rax)
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; CHECK-AMD-NEXT: Ltmp8:
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; CHECK-AMD-NEXT: nopl 512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp9:
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; CHECK-AMD-NEXT: nopw 512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp10:
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp11:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp12:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp13:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp14:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp15:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: Ltmp16:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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; CHECK-AMD-NEXT: nop
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; CHECK-AMD-NEXT: Ltmp17:
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: .byte 102
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; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
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||||
; CHECK-AMD-NEXT: xchgw %ax, %ax
|
||||
; CHECK-AMD-NEXT: Ltmp18:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopl (%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp19:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopl 8(%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp20:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopl 8(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp21:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopw 8(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp22:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopl 512(%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp23:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopl 512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp24:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopw 512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp25:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp26:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp27:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp28:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp29:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp30:
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: .byte 102
|
||||
; CHECK-AMD-NEXT: nopw %cs:512(%rax,%rax)
|
||||
; CHECK-AMD-NEXT: Ltmp31:
|
||||
; CHECK-AMD-NEXT: popq %rbp
|
||||
; CHECK-AMD-NEXT: retq
|
||||
entry:
|
||||
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 0, i32 0)
|
||||
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 1, i32 1)
|
||||
tail call void (i64, i32, ...) @llvm.experimental.stackmap(i64 2, i32 2)
|
||||
|
||||
@ -1,5 +1,5 @@
|
||||
; RUN: llc -mtriple=x86_64-apple-darwin -mcpu=corei7 -frame-pointer=all -filetype=obj %s -o - | llvm-objdump -d - | FileCheck %s
|
||||
; RUN: llc -mtriple=x86_64-apple-darwin -mcpu=corei7 -frame-pointer=all -filetype=asm %s -o - | llvm-mc -triple=x86_64-apple-darwin -mcpu=corei7 -filetype=obj - | llvm-objdump -d - | FileCheck %s
|
||||
; RUN: llc -mtriple=x86_64-apple-darwin -mcpu=znver1 -frame-pointer=all -filetype=obj %s -o - | llvm-objdump -d - | FileCheck %s
|
||||
; RUN: llc -mtriple=x86_64-apple-darwin -mcpu=znver1 -frame-pointer=all -filetype=asm %s -o - | llvm-mc -triple=x86_64-apple-darwin -mcpu=znver1 -filetype=obj - | llvm-objdump -d - | FileCheck %s
|
||||
|
||||
define void @nop_test() {
|
||||
entry:
|
||||
|
||||
Loading…
Reference in New Issue
Block a user