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[SOL] Use mov32 to load and zero extend immediate in V2+ #166

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Merged
merged 3 commits into from
Jul 27, 2025
Merged

[SOL] Use mov32 to load and zero extend immediate in V2+ #166

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256a2f7
Load and zero extend
LucasSte Jul 25, 2025
ee1755c
Add test
LucasSte Jul 25, 2025
d7bf87b
Complement test
LucasSte Jul 27, 2025
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8 changes: 8 additions & 0 deletions llvm/lib/Target/SBF/SBFInstrInfo.td
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Original file line number Diff line number Diff line change
Expand Up @@ -443,6 +443,14 @@ let Predicates = [SBFExplicitSignExt], DecoderNamespace = "SBFv2" in {
[]>;
}

let Predicates = [SBFExplicitSignExt], DecoderNamespace = "Repeated" in {
def MOV_ri_32_zext : MATH_RI<SBF_ALU, SBF_MOV,
(outs GPR:$dst),
(ins i64imm:$imm),
"mov32 $dst, $imm",
[(set GPR:$dst, (i64 i64immZExt32:$imm))]>;
}

def MOV_rr_32_no_sext_v1 : MATH_RR<SBF_ALU, SBF_MOV,
(outs GPR32:$dst),
(ins GPR32:$src),
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28 changes: 28 additions & 0 deletions llvm/test/CodeGen/SBF/mov_zext.ll
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Original file line number Diff line number Diff line change
@@ -0,0 +1,28 @@
; RUN: llc -march=sbf -mcpu=v1 < %s | FileCheck --check-prefix=CHECK-V1 %s
; RUN: llc -march=sbf -mcpu=v2 < %s | FileCheck --check-prefix=CHECK-V2 %s

define dso_local i64 @mov_1() {
entry:
; CHECK-LABEL: mov_1
; CHECK-V1: lddw r0, 4294967294
; CHECK-V2: mov32 r0, -2
; CHECK-V2-NOT: hor64
ret i64 4294967294
}

define dso_local i64 @mov_2() {
entry:
; CHECK-LABEL: mov_2
; CHECK-V1: lddw r0, -4294967294
; CHECK-V2: mov32 r0, 2
; CHECK-V2: hor64 r0, -1
ret i64 -4294967294
}

define dso_local i64 @mov_3() {
entry:
; CHECK-LABEL: mov_3
; CHECK-V1: mov64 r0, 429496729
; CHECK-V2: mov64 r0, 429496729
ret i64 429496729
}
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