forked from OSchip/llvm-project
68 lines
1.5 KiB
LLVM
68 lines
1.5 KiB
LLVM
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; RUN: llc < %s -march=arm64 | FileCheck %s
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define i64 @_f0(i64* %p) {
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; CHECK: f0:
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; CHECK: ldur x0, [x0, #-8]
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; CHECK-NEXT: ret
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%tmp = getelementptr inbounds i64* %p, i64 -1
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%ret = load i64* %tmp, align 2
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ret i64 %ret
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}
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define i32 @_f1(i32* %p) {
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; CHECK: f1:
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; CHECK: ldur w0, [x0, #-4]
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; CHECK-NEXT: ret
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%tmp = getelementptr inbounds i32* %p, i64 -1
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%ret = load i32* %tmp, align 2
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ret i32 %ret
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}
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define i16 @_f2(i16* %p) {
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; CHECK: f2:
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; CHECK: ldurh w0, [x0, #-2]
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; CHECK-NEXT: ret
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%tmp = getelementptr inbounds i16* %p, i64 -1
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%ret = load i16* %tmp, align 2
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ret i16 %ret
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}
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define i8 @_f3(i8* %p) {
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; CHECK: f3:
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; CHECK: ldurb w0, [x0, #-1]
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; CHECK-NEXT: ret
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%tmp = getelementptr inbounds i8* %p, i64 -1
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%ret = load i8* %tmp, align 2
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ret i8 %ret
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}
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define i64 @zext32(i8* %a) nounwind ssp {
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; CHECK-LABEL: zext32:
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; CHECK: ldur w0, [x0, #-12]
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; CHECK-NEXT: ret
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%p = getelementptr inbounds i8* %a, i64 -12
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%tmp1 = bitcast i8* %p to i32*
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%tmp2 = load i32* %tmp1, align 4
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%ret = zext i32 %tmp2 to i64
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ret i64 %ret
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}
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define i64 @zext16(i8* %a) nounwind ssp {
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; CHECK-LABEL: zext16:
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; CHECK: ldurh w0, [x0, #-12]
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; CHECK-NEXT: ret
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%p = getelementptr inbounds i8* %a, i64 -12
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%tmp1 = bitcast i8* %p to i16*
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%tmp2 = load i16* %tmp1, align 2
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%ret = zext i16 %tmp2 to i64
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ret i64 %ret
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}
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define i64 @zext8(i8* %a) nounwind ssp {
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; CHECK-LABEL: zext8:
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; CHECK: ldurb w0, [x0, #-12]
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; CHECK-NEXT: ret
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%p = getelementptr inbounds i8* %a, i64 -12
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%tmp2 = load i8* %p, align 1
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%ret = zext i8 %tmp2 to i64
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ret i64 %ret
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}
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