Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/CodeGen/SystemZ/memchr-01.ll

@@ -1,57 +0,0 @@
-; Test memchr using SRST, with the correct prototype.
-;
-; RUN: llc < %s -mtriple=s390x-linux-gnu -no-integrated-as | FileCheck %s
-
-declare i8 *@memchr(i8 *%src, i32 %char, i64 %len)
-
-; Test a simple forwarded call.
-define i8 *@f1(i64 %len, i8 *%src, i32 %char) {
-; CHECK-LABEL: f1:
-; CHECK-DAG: agr %r2, %r3
-; CHECK-DAG: llcr %r0, %r4
-; CHECK: [[LABEL:\.[^:]*]]:
-; CHECK: srst %r2, %r3
-; CHECK-NEXT: jo [[LABEL]]
-; CHECK: blr %r14
-; CHECK: lghi %r2, 0
-; CHECK: br %r14
-  %res = call i8 *@memchr(i8 *%src, i32 %char, i64 %len)
-  ret i8 *%res
-}
-
-; Test a doubled call with no use of %r0 in between.  There should be a
-; single load of %r0.
-define i8 *@f2(i8 *%src, i8 *%charptr, i64 %len) {
-; CHECK-LABEL: f2:
-; CHECK: llc %r0, 0(%r3)
-; CHECK-NOT: %r0
-; CHECK: srst [[RES1:%r[1-5]]], %r2
-; CHECK-NOT: %r0
-; CHECK: srst %r2, [[RES1]]
-; CHECK: br %r14
-  %char = load volatile i8 , i8 *%charptr
-  %charext = zext i8 %char to i32
-  %res1 = call i8 *@memchr(i8 *%src, i32 %charext, i64 %len)
-  %res2 = call i8 *@memchr(i8 *%res1, i32 %charext, i64 %len)
-  ret i8 *%res2
-}
-
-; Test a doubled call with a use of %r0 in between.  %r0 must be loaded
-; for each loop.
-define i8 *@f3(i8 *%src, i8 *%charptr, i64 %len) {
-; CHECK-LABEL: f3:
-; CHECK: llc [[CHAR:%r[1-5]]], 0(%r3)
-; CHECK: lr %r0, [[CHAR]]
-; CHECK: srst [[RES1:%r[1-5]]], %r2
-; CHECK: lhi %r0, 0
-; CHECK: blah %r0
-; CHECK: lr %r0, [[CHAR]]
-; CHECK: srst %r2, [[RES1]]
-; CHECK: br %r14
-  %char = load volatile i8 , i8 *%charptr
-  %charext = zext i8 %char to i32
-  %res1 = call i8 *@memchr(i8 *%src, i32 %charext, i64 %len)
-  call void asm sideeffect "blah $0", "{r0}" (i32 0)
-  %res2 = call i8 *@memchr(i8 *%res1, i32 %charext, i64 %len)
-  ret i8 *%res2
-}