llvm-project/llvm/test/CodeGen/X86/xray-loop-detection.ll

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[XRay] Fix machine verifier issues in X86 I'm not sure if this fix is the right thing to do, but it seemed to me that PATCHABLE_RET and PATCHABLE_TAIL_CALL don't have any defs. Running the following: ``` LLVM_ENABLE_MACHINE_VERIFIER=1 ./build/bin/llvm-lit -v -a test/CodeGen/X86/xray-* ``` results in the following tests to fail (along others): ``` LLVM :: CodeGen/X86/xray-attribute-instrumentation.ll LLVM :: CodeGen/X86/xray-custom-log.ll LLVM :: CodeGen/X86/xray-log-args.ll LLVM :: CodeGen/X86/xray-loop-detection.ll LLVM :: CodeGen/X86/xray-multiplerets-in-blocks.mir LLVM :: CodeGen/X86/xray-section-group.ll LLVM :: CodeGen/X86/xray-selective-instrumentation.ll LLVM :: CodeGen/X86/xray-tail-call-sled.ll LLVM :: CodeGen/X86/xray-typed-event-log.ll ``` The errors are: ``` *** Bad machine code: Explicit definition must be a register *** - function: fn - basic block: %bb.0 (0x7fa31a84d908) - instruction: PATCHABLE_RET 2560, $eax - operand 0: 2560 ``` and ``` *** Bad machine code: Explicit definition must be a register *** - function: caller - basic block: %bb.0 (0x7fbff3044108) - instruction: PATCHABLE_TAIL_CALL 3009, @callee, <regmask $bh $bl $bp $bph $bpl $bx $ebp $ebx $hbp $hbx $rbp $rbx $r12 $r13 $r14 $r15 $r12b $r13b $r14b $r15b $r12bh $r13bh $r14bh $r15bh $r12d $r13d $r14d $r15d $r12w $r13w $r14w $r15w $r12wh and 3 more...>, implicit $rsp, implicit $ssp, implicit $rsp, implicit $ssp, implicit $edi - operand 0: 3009 ``` Differential Revision: https://reviews.llvm.org/D49187 llvm-svn: 336906
2018-07-12 22:36:43 +08:00
; RUN: llc -verify-machineinstrs -filetype=asm -o - -mtriple=x86_64-unknown-linux-gnu < %s | FileCheck %s
; RUN: llc -verify-machineinstrs -filetype=asm -o - -mtriple=x86_64-darwin-unknown < %s | FileCheck %s
define i32 @foo(i32 %i) nounwind noinline uwtable "xray-instruction-threshold"="1" {
entry:
br label %Test
Test:
%indvar = phi i32 [0, %entry], [%nextindvar, %Inc]
%cond = icmp eq i32 %indvar, %i
br i1 %cond, label %Exit, label %Inc
Inc:
%nextindvar = add i32 %indvar, 1
br label %Test
Exit:
%retval = phi i32 [%indvar, %Test]
ret i32 %retval
}
; CHECK-LABEL: xray_sled_0:
; CHECK-NEXT: .ascii "\353\t"
; CHECK-NEXT: nopw 512(%rax,%rax)