derek.holloway
7502bf64a4
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40 lines
1.0 KiB
LLVM
40 lines
1.0 KiB
LLVM
; Test strlen using SRST, i64 version.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare i64 @strlen(ptr %src)
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declare i64 @strnlen(ptr %src, i64 %len)
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; Test strlen with its proper i64 prototype. It would also be valid for
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; the uses of %r3 and REG after the LGR to be swapped.
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define i64 @f1(i32 %dummy, ptr %src) {
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; CHECK-LABEL: f1:
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; CHECK-DAG: lhi %r0, 0
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; CHECK-DAG: lghi %r2, 0
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; CHECK-DAG: lgr [[REG:%r[145]]], %r3
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK-NEXT: srst %r2, [[REG]]
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; CHECK-NEXT: jo [[LABEL]]
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; CHECK-NEXT: %bb.{{[0-9]+}}
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; CHECK-NEXT: sgr %r2, %r3
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; CHECK: br %r14
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%res = call i64 @strlen(ptr %src)
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ret i64 %res
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}
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; Test strnlen with its proper i64 prototype.
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define i64 @f2(i64 %len, ptr %src) {
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; CHECK-LABEL: f2:
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; CHECK-DAG: agr %r2, %r3
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; CHECK-DAG: lhi %r0, 0
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; CHECK-DAG: lgr [[REG:%r[145]]], %r3
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK-NEXT: srst %r2, [[REG]]
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; CHECK-NEXT: jo [[LABEL]]
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; CHECK-NEXT: %bb.{{[0-9]+}}
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; CHECK-NEXT: sgr %r2, %r3
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; CHECK: br %r14
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%res = call i64 @strnlen(ptr %src, i64 %len)
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ret i64 %res
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}
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