derek.holloway
7502bf64a4
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71 lines
1.6 KiB
LLVM
71 lines
1.6 KiB
LLVM
; Test strcmp using CLST, i32 version.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare signext i32 @strcmp(ptr %src1, ptr %src2)
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; Check a case where the result is used as an integer.
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define i32 @f1(ptr %src1, ptr %src2) {
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; CHECK-LABEL: f1:
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; CHECK: lhi %r0, 0
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: clst %r3, %r2
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; CHECK-NEXT: jo [[LABEL]]
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; CHECK-NEXT: %bb.{{[0-9]+}}
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; CHECK-NEXT: ipm %r2
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; CHECK: sll %r2, 2
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; CHECK: sra %r2, 30
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; CHECK: br %r14
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%res = call i32 @strcmp(ptr %src1, ptr %src2)
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ret i32 %res
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}
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; Check a case where the result is tested for equality.
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define void @f2(ptr %src1, ptr %src2, ptr %dest) {
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; CHECK-LABEL: f2:
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; CHECK: lhi %r0, 0
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: clst %r3, %r2
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; CHECK-NEXT: jo [[LABEL]]
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; CHECK-NEXT: %bb.{{[0-9]+}}
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; CHECK-NEXT: ber %r14
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; CHECK: br %r14
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%res = call i32 @strcmp(ptr %src1, ptr %src2)
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%cmp = icmp eq i32 %res, 0
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br i1 %cmp, label %exit, label %store
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store:
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store i32 0, ptr %dest
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br label %exit
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exit:
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ret void
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}
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; Test a case where the result is used both as an integer and for
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; branching.
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define i32 @f3(ptr %src1, ptr %src2, ptr %dest) {
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; CHECK-LABEL: f3:
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; CHECK: lhi %r0, 0
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; CHECK: [[LABEL:\.[^:]*]]:
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; CHECK: clst %r3, %r2
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; CHECK-NEXT: jo [[LABEL]]
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; CHECK-NEXT: %bb.{{[0-9]+}}
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; CHECK-NEXT: ipm %r2
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; CHECK: sll %r2, 2
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; CHECK: sra %r2, 30
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; CHECK: blr %r14
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; CHECK: br %r14
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entry:
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%res = call i32 @strcmp(ptr %src1, ptr %src2)
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%cmp = icmp slt i32 %res, 0
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br i1 %cmp, label %exit, label %store
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store:
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store i32 0, ptr %dest
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br label %exit
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exit:
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ret i32 %res
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}
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