9c75a98155
Implement the following assembly format flags, which are already
supported by GCC:
'A': On z14 or higher: If operand is a mem print the alignment
hint usable with vl/vst prefixed by a comma.
'O': print only the displacement of a memory reference or address.
'R': print only the base register of a memory reference or address.
Implement 'A' conservatively, since the memory operand alignment
information is not available for INLINEASM at the moment.
73 lines
1.7 KiB
LLVM
73 lines
1.7 KiB
LLVM
; Test the "Q" asm constraint, which accepts addresses that have a base
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; and a 12-bit displacement.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -no-integrated-as | FileCheck %s
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; Check the lowest range.
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define void @f1(i64 %base) {
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; CHECK-LABEL: f1:
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; CHECK: blah 0(%r2)
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; CHECK: br %r14
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%addr = inttoptr i64 %base to ptr
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call void asm "blah $0", "=*Q" (ptr elementtype(i64) %addr)
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ret void
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}
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; Check the next lowest byte.
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define void @f2(i64 %base) {
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; CHECK-LABEL: f2:
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; CHECK: aghi %r2, -1
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; CHECK: blah 0(%r2)
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; CHECK: br %r14
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%add = add i64 %base, -1
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%addr = inttoptr i64 %add to ptr
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call void asm "blah $0", "=*Q" (ptr elementtype(i64) %addr)
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ret void
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}
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; Check the highest range.
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define void @f3(i64 %base) {
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; CHECK-LABEL: f3:
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; CHECK: blah 4095(%r2)
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; CHECK: br %r14
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%add = add i64 %base, 4095
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%addr = inttoptr i64 %add to ptr
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call void asm "blah $0", "=*Q" (ptr elementtype(i64) %addr)
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ret void
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}
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; Check the next highest byte.
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define void @f4(i64 %base) {
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; CHECK-LABEL: f4:
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; CHECK: aghi %r2, 4096
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; CHECK: blah 0(%r2)
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; CHECK: br %r14
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%add = add i64 %base, 4096
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%addr = inttoptr i64 %add to ptr
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call void asm "blah $0", "=*Q" (ptr elementtype(i64) %addr)
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ret void
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}
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; Check that indices aren't allowed
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define void @f5(i64 %base, i64 %index) {
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; CHECK-LABEL: f5:
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; CHECK: agr %r2, %r3
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; CHECK: blah 0(%r2)
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; CHECK: br %r14
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%add = add i64 %base, %index
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%addr = inttoptr i64 %add to ptr
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call void asm "blah $0", "=*Q" (ptr elementtype(i64) %addr)
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ret void
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}
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; Check A, O and R format flags.
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define void @f6(i64 %base) {
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; CHECK-LABEL: f6:
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; CHECK: blah 111,%r2
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; CHECK: br %r14
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%add = add i64 %base, 111
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%addr = inttoptr i64 %add to ptr
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call void asm "blah ${0:O},${0:R}${0:A}", "=*Q" (ptr elementtype(i64) %addr)
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ret void
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}
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