7aecf2323c
Summary: This is a part of the series of efforts for correcting alignment of memory operations. (Another related bugs: https://bugs.llvm.org/show_bug.cgi?id=44388 , https://bugs.llvm.org/show_bug.cgi?id=44543 ) This fixes https://bugs.llvm.org/show_bug.cgi?id=43880 by giving default alignment of loads to 1. The test CodeGen/AArch64/bcmp-inline-small.ll should have been changed; it was introduced by https://reviews.llvm.org/D64805 . I talked with @evandro, and confirmed that the test is okay to be changed. Other two tests from PowerPC needed changes as well, but fixes were straightforward. Reviewers: courbet Reviewed By: courbet Subscribers: nlopes, gchatelet, wuzish, nemanjai, kristof.beyls, hiraditya, steven.zhang, danielkiss, llvm-commits, evandro Tags: #llvm Differential Revision: https://reviews.llvm.org/D76113
60 lines
1.5 KiB
LLVM
60 lines
1.5 KiB
LLVM
; 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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; CHECK-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-COUNT-30: ldrb w
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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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; CHECK-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: ldr x
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; CHECKS-NEXT: ldr x
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; CHECKS-NEXT: ldr w
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; CHECKS-NEXT: ldr w
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; CHECKS-NEXT: ldrh w
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; CHECKS-NEXT: ldrh w
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; CHECKS-NEXT: ldrb w
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; CHECKS-NEXT: ldrb w
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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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