a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
58 lines
1.7 KiB
LLVM
58 lines
1.7 KiB
LLVM
; Test memchr using SRST, with the correct prototype.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -no-integrated-as | FileCheck %s
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declare ptr@memchr(ptr %src, i32 %char, i64 %len)
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; Test a simple forwarded call.
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define ptr@f1(i64 %len, ptr %src, i32 %char) {
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; CHECK-LABEL: f1:
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; CHECK-DAG: agr %r2, %r3
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; CHECK-DAG: llcr %r0, %r4
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: srst %r2, %r3
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; CHECK-NEXT: jo [[LABEL]]
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; CHECK: blr %r14
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; CHECK: lghi %r2, 0
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; CHECK: br %r14
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%res = call ptr@memchr(ptr %src, i32 %char, i64 %len)
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ret ptr %res
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}
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; Test a doubled call with no use of %r0 in between. There should be a
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; single load of %r0.
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define ptr@f2(ptr %src, ptr %charptr, i64 %len) {
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; CHECK-LABEL: f2:
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; CHECK: llc %r0, 0(%r3)
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; CHECK-NOT: %r0
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; CHECK: srst [[RES1:%r[1-5]]], %r2
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; CHECK-NOT: %r0
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; CHECK: srst %r2, [[RES1]]
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; CHECK: br %r14
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%char = load volatile i8, ptr %charptr
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%charext = zext i8 %char to i32
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%res1 = call ptr@memchr(ptr %src, i32 %charext, i64 %len)
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%res2 = call ptr@memchr(ptr %res1, i32 %charext, i64 %len)
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ret ptr %res2
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}
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; Test a doubled call with a use of %r0 in between. %r0 must be loaded
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; for each loop.
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define ptr@f3(ptr %src, ptr %charptr, i64 %len) {
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; CHECK-LABEL: f3:
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; CHECK: llc [[CHAR:%r[1-5]]], 0(%r3)
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; CHECK: lr %r0, [[CHAR]]
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; CHECK: srst [[RES1:%r[1-5]]], %r2
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; CHECK: lhi %r0, 0
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; CHECK: blah %r0
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; CHECK: lr %r0, [[CHAR]]
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; CHECK: srst %r2, [[RES1]]
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; CHECK: br %r14
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%char = load volatile i8, ptr %charptr
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%charext = zext i8 %char to i32
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%res1 = call ptr@memchr(ptr %src, i32 %charext, i64 %len)
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call void asm sideeffect "blah $0", "{r0}" (i32 0)
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%res2 = call ptr@memchr(ptr %res1, i32 %charext, i64 %len)
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ret ptr %res2
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}
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