54 lines
1.4 KiB
LLVM
54 lines
1.4 KiB
LLVM
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; RUN: llc -O2 < %s -mtriple=aarch64-linux-gnu | FileCheck %s --check-prefixes=CHECK,CHECKN
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; RUN: llc -O2 < %s -mtriple=aarch64-linux-gnu -mattr=strict-align | FileCheck %s --check-prefixes=CHECK,CHECKS
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declare i32 @bcmp(i8*, i8*, i64) nounwind readonly
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declare i32 @memcmp(i8*, i8*, i64) nounwind readonly
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define i1 @test_b2(i8* %s1, i8* %s2) {
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entry:
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%bcmp = call i32 @bcmp(i8* %s1, i8* %s2, i64 15)
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%ret = icmp eq i32 %bcmp, 0
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ret i1 %ret
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; CHECK-LABEL: test_b2:
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; CHECKN-NOT: bl bcmp
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; CHECKN: ldr x
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; CHECKN-NEXT: ldr x
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; CHECKN-NEXT: ldur x
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; CHECKN-NEXT: ldur x
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; CHECKS: bl bcmp
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}
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define i1 @test_b2_align8(i8* align 8 %s1, i8* align 8 %s2) {
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entry:
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%bcmp = call i32 @bcmp(i8* %s1, i8* %s2, i64 15)
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%ret = icmp eq i32 %bcmp, 0
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ret i1 %ret
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; CHECK-LABEL: test_b2_align8:
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; CHECKN-NOT: bl bcmp
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; CHECKN: ldr x
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; CHECKN-NEXT: ldr x
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; CHECKN-NEXT: ldur x
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; CHECKN-NEXT: ldur x
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; TODO: Four loads should be within the limit, but the heuristic isn't implemented.
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; CHECKS: bl bcmp
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}
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define i1 @test_bs(i8* %s1, i8* %s2) optsize {
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entry:
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%memcmp = call i32 @memcmp(i8* %s1, i8* %s2, i64 31)
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%ret = icmp eq i32 %memcmp, 0
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ret i1 %ret
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; CHECK-LABEL: test_bs:
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; CHECKN-NOT: bl memcmp
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; CHECKN: ldp x
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; CHECKN-NEXT: ldp x
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; CHECKN-NEXT: ldr x
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; CHECKN-NEXT: ldr x
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; CHECKN-NEXT: ldur x
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; CHECKN-NEXT: ldur x
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; CHECKS: bl memcmp
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}
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