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llvm-mirror/test/CodeGen/SystemZ/fentry-insertion.ll
Jonas Paulsson e89d1ea35f [SystemZ] Add support for fentry.
SystemZAsmPrinter now properly emits function calls to __fentry__.

Review: Ulrich Weigand
llvm-svn: 370743
2019-09-03 11:21:12 +00:00

30 lines
685 B
LLVM

; RUN: llc %s -mtriple=s390x-linux-gnu -mcpu=z10 -o - -verify-machineinstrs \
; RUN: | FileCheck %s
define void @test1() #0 {
entry:
ret void
; CHECK-LABEL: @test1
; CHECK: brasl %r0, __fentry__
; CHECK-NOT: mcount
; CHECK: br %r14
}
define void @test2() #1 {
entry:
br label %bb1
bb1:
call void @address_taken(i64 ptrtoint (i8* blockaddress(@test2, %bb1) to i64), i32 512)
ret void
; CHECK-LABEL: @test2
; CHECK: brasl %r0, __fentry__
; CHECK-NOT: mcount
; CHECK: br %r14
}
declare void @address_taken(i64, i32) local_unnamed_addr
attributes #0 = { "fentry-call"="true" }
attributes #1 = { inlinehint minsize noredzone nounwind optsize sspstrong "fentry-call"="true" }