a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
60 lines
1.6 KiB
LLVM
60 lines
1.6 KiB
LLVM
; Check that unaligned accesses are allowed in general. We check the
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; few exceptions (like CRL) in their respective test files.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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; Check that these four byte stores become a single word store.
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define void @f1(ptr %ptr) {
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; CHECK: f1
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; CHECK: iilf [[REG:%r[0-5]]], 66051
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; CHECK: st [[REG]], 0(%r2)
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; CHECK: br %r14
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%off1 = getelementptr i8, ptr %ptr, i64 1
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%off2 = getelementptr i8, ptr %ptr, i64 2
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%off3 = getelementptr i8, ptr %ptr, i64 3
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store i8 0, ptr %ptr
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store i8 1, ptr %off1
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store i8 2, ptr %off2
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store i8 3, ptr %off3
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ret void
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}
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; Check that unaligned 2-byte accesses are allowed.
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define i16 @f2(ptr %src, ptr %dst) {
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; CHECK-LABEL: f2:
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; CHECK: lh %r2, 0(%r2)
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; CHECK: sth %r2, 0(%r3)
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; CHECK: br %r14
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%val = load i16, ptr %src, align 1
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store i16 %val, ptr %dst, align 1
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ret i16 %val
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}
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; Check that unaligned 4-byte accesses are allowed.
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define i32 @f3(ptr %src1, ptr %src2, ptr %dst) {
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; CHECK-LABEL: f3:
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; CHECK: l %r2, 0(%r2)
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; CHECK: s %r2, 0(%r3)
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; CHECK: st %r2, 0(%r4)
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; CHECK: br %r14
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%val1 = load i32, ptr %src1, align 1
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%val2 = load i32, ptr %src2, align 2
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%sub = sub i32 %val1, %val2
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store i32 %sub, ptr %dst, align 1
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ret i32 %sub
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}
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; Check that unaligned 8-byte accesses are allowed.
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define i64 @f4(ptr %src1, ptr %src2, ptr %dst) {
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; CHECK-LABEL: f4:
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; CHECK: lg %r2, 0(%r2)
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; CHECK: sg %r2, 0(%r3)
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; CHECK: stg %r2, 0(%r4)
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; CHECK: br %r14
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%val1 = load i64, ptr %src1, align 1
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%val2 = load i64, ptr %src2, align 2
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%sub = sub i64 %val1, %val2
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store i64 %sub, ptr %dst, align 4
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ret i64 %sub
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}
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