File: strlen-nobuiltin.ll

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llvm-toolchain-19 1%3A19.1.7-3~deb12u1
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; Test that strlen/strnlen won't be converted to SRST if calls are
; marked with nobuiltin, eg. for sanitizers.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s

declare i64 @strlen(ptr %src)
declare i64 @strnlen(ptr %src, i64 %len)

define i64 @f1(i32 %dummy, ptr %src) {
; CHECK-LABEL: f1:
; CHECK: brasl %r14, strlen
; CHECK: br %r14
  %res = call i64 @strlen(ptr %src) nobuiltin
  ret i64 %res
}

; Likewise for strnlen.
define i64 @f2(i64 %len, ptr %src) {
; CHECK-LABEL: f2:
; CHECK-NOT: srst
; CHECK: brasl %r14, strnlen
; CHECK: br %r14
  %res = call i64 @strnlen(ptr %src, i64 %len) nobuiltin
  ret i64 %res
}