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; Test proper insertion of mcount instrumentation
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -verify-machineinstrs -o - | FileCheck %s
;
; CHECK: # %bb.0:
; CHECK-NEXT: stg %r14, 8(%r15)
; CHECK-NEXT: brasl %r14, mcount@PLT
; CHECK-NEXT: lg %r14, 8(%r15)
define dso_local signext i32 @fib(i32 noundef signext %n) #0 {
entry:
%n.addr = alloca i32, align 4
store i32 %n, ptr %n.addr, align 4
%0 = load i32, ptr %n.addr, align 4
%cmp = icmp sle i32 %0, 1
br i1 %cmp, label %cond.true, label %cond.false
cond.true: ; preds = %entry
br label %cond.end
cond.false: ; preds = %entry
%1 = load i32, ptr %n.addr, align 4
%sub = sub nsw i32 %1, 1
%call = call signext i32 @fib(i32 noundef signext %sub)
%2 = load i32, ptr %n.addr, align 4
%sub1 = sub nsw i32 %2, 2
%call2 = call signext i32 @fib(i32 noundef signext %sub1)
%add = add nsw i32 %call, %call2
br label %cond.end
cond.end: ; preds = %cond.false, %cond.true
%cond = phi i32 [ 1, %cond.true ], [ %add, %cond.false ]
ret i32 %cond
}
attributes #0 = { "instrument-function-entry-inlined"="mcount" }
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