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