121 lines
4.2 KiB
LLVM
121 lines
4.2 KiB
LLVM
; RUN: opt -passes="function(ee-instrument),cgscc(inline),function(ee-instrument<post-inline>)" -S < %s | FileCheck %s
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; Running the passes twice should not result in more instrumentation.
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; RUN: opt -passes="function(ee-instrument),function(ee-instrument),cgscc(inline),function(ee-instrument<post-inline>),function(ee-instrument<post-inline>)" -S < %s | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64le-unknown-linux"
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define void @leaf_function() #0 {
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entry:
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ret void
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; CHECK-LABEL: define void @leaf_function()
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; CHECK: entry:
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; CHECK-NEXT: call void @mcount()
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; CHECK-NEXT: %0 = call ptr @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__cyg_profile_func_enter(ptr @leaf_function, ptr %0)
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; CHECK-NEXT: %1 = call ptr @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__cyg_profile_func_exit(ptr @leaf_function, ptr %1)
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; CHECK-NEXT: ret void
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}
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define void @root_function() #0 {
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entry:
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call void @leaf_function()
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ret void
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; CHECK-LABEL: define void @root_function()
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; CHECK: entry:
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; CHECK-NEXT: call void @mcount()
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; CHECK-NEXT: %0 = call ptr @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__cyg_profile_func_enter(ptr @root_function, ptr %0)
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; Entry and exit calls, inlined from @leaf_function()
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; CHECK-NEXT: %1 = call ptr @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__cyg_profile_func_enter(ptr @leaf_function, ptr %1)
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; CHECK-NEXT: %2 = call ptr @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__cyg_profile_func_exit(ptr @leaf_function, ptr %2)
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; CHECK-NEXT: %3 = call ptr @llvm.returnaddress(i32 0)
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; CHECK-NEXT: call void @__cyg_profile_func_exit(ptr @root_function, ptr %3)
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; CHECK-NEXT: ret void
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}
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; The mcount function has many different names.
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define void @f1() #1 { entry: ret void }
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; CHECK-LABEL: define void @f1
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; CHECK: call void @.mcount
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define void @f2() #2 { entry: ret void }
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; CHECK-LABEL: define void @f2
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; CHECK: call void @llvm.arm.gnu.eabi.mcount
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define void @f3() #3 { entry: ret void }
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; CHECK-LABEL: define void @f3
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; CHECK: call void @"\01_mcount"
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define void @f4() #4 { entry: ret void }
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; CHECK-LABEL: define void @f4
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; CHECK: call void @"\01mcount"
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define void @f5() #5 { entry: ret void }
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; CHECK-LABEL: define void @f5
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; CHECK: call void @__mcount
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define void @f6() #6 { entry: ret void }
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; CHECK-LABEL: define void @f6
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; CHECK: call void @_mcount
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define void @f7() #7 { entry: ret void }
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; CHECK-LABEL: define void @f7
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; CHECK: call void @__cyg_profile_func_enter_bare
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; Treat musttail calls as terminators; inserting between the musttail call and
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; ret is not allowed.
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declare ptr @tailcallee()
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define ptr @tailcaller() #8 {
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%1 = musttail call ptr @tailcallee()
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ret ptr %1
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; CHECK-LABEL: define ptr @tailcaller
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; CHECK: call void @__cyg_profile_func_exit
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; CHECK: musttail call ptr @tailcallee
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; CHECK: ret
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}
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define ptr @tailcaller2() #8 {
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%1 = musttail call ptr @tailcallee()
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%2 = bitcast ptr %1 to ptr
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ret ptr %2
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; CHECK-LABEL: define ptr @tailcaller2
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; CHECK: call void @__cyg_profile_func_exit
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; CHECK: musttail call ptr @tailcallee
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; CHECK: bitcast
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; CHECK: ret
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}
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;; naked functions are not instrumented, otherwise the argument registers
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;; and the return address register (if present) would be clobbered.
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define void @naked() naked { entry: ret void }
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; CHECK-LABEL: define void @naked(
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; CHECK-LABEL-NEXT: entry:
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; CHECK-LABEL-NEXT: ret void
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; The attributes are "consumed" when the instrumentation is inserted.
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; CHECK: attributes
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; CHECK-NOT: instrument-function
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attributes #0 = { "instrument-function-entry-inlined"="mcount" "instrument-function-entry"="__cyg_profile_func_enter" "instrument-function-exit"="__cyg_profile_func_exit" }
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attributes #1 = { "instrument-function-entry-inlined"=".mcount" }
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attributes #2 = { "instrument-function-entry-inlined"="llvm.arm.gnu.eabi.mcount" }
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attributes #3 = { "instrument-function-entry-inlined"="\01_mcount" }
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attributes #4 = { "instrument-function-entry-inlined"="\01mcount" }
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attributes #5 = { "instrument-function-entry-inlined"="__mcount" }
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attributes #6 = { "instrument-function-entry-inlined"="_mcount" }
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attributes #7 = { "instrument-function-entry-inlined"="__cyg_profile_func_enter_bare" }
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attributes #8 = { "instrument-function-exit"="__cyg_profile_func_exit" }
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