llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-backend-aarch64 Author: None (llvmbot) <details> <summary>Changes</summary> Backport 070848c17c2944afa494d42d3ad42929f3379842 Requested by: @<!-- -->nikic --- Full diff: https://github.com/llvm/llvm-project/pull/81581.diff 2 Files Affected: - (modified) llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp (+2-3) - (modified) llvm/test/CodeGen/AArch64/GlobalISel/legalize-xtn.mir (+24) ``````````diff diff --git a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp index fd69a7d6c33d03..4b9d549e791142 100644 --- a/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp +++ b/llvm/lib/Target/AArch64/GISel/AArch64LegalizerInfo.cpp @@ -622,9 +622,8 @@ AArch64LegalizerInfo::AArch64LegalizerInfo(const AArch64Subtarget &ST) .lowerIf([=](const LegalityQuery &Query) { LLT DstTy = Query.Types[0]; LLT SrcTy = Query.Types[1]; - return DstTy.isVector() && (SrcTy.getSizeInBits() > 128 || - (DstTy.getScalarSizeInBits() * 2 < - SrcTy.getScalarSizeInBits())); + return DstTy.isVector() && SrcTy.getSizeInBits() > 128 && + DstTy.getScalarSizeInBits() * 2 <= SrcTy.getScalarSizeInBits(); }) .alwaysLegal(); diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/legalize-xtn.mir b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-xtn.mir index 16b780a8397347..661265173ae82b 100644 --- a/llvm/test/CodeGen/AArch64/GlobalISel/legalize-xtn.mir +++ b/llvm/test/CodeGen/AArch64/GlobalISel/legalize-xtn.mir @@ -529,3 +529,27 @@ body: | RET_ReallyLR implicit $q0 ... + +--- +name: pr81244 +tracksRegLiveness: true +body: | + bb.0: + liveins: $d0 + ; CHECK-LABEL: name: pr81244 + ; CHECK: liveins: $d0 + ; CHECK-NEXT: {{ $}} + ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<2 x s32>) = COPY $d0 + ; CHECK-NEXT: [[TRUNC:%[0-9]+]]:_(<2 x s8>) = G_TRUNC [[COPY]](<2 x s32>) + ; CHECK-NEXT: [[CONCAT_VECTORS:%[0-9]+]]:_(<4 x s8>) = G_CONCAT_VECTORS [[TRUNC]](<2 x s8>), [[TRUNC]](<2 x s8>) + ; CHECK-NEXT: [[ANYEXT:%[0-9]+]]:_(<4 x s16>) = G_ANYEXT [[CONCAT_VECTORS]](<4 x s8>) + ; CHECK-NEXT: $d0 = COPY [[ANYEXT]](<4 x s16>) + ; CHECK-NEXT: RET_ReallyLR implicit $d0 + %0:_(<2 x s32>) = COPY $d0 + %1:_(<2 x s8>) = G_TRUNC %0(<2 x s32>) + %2:_(<4 x s8>) = G_CONCAT_VECTORS %1(<2 x s8>), %1(<2 x s8>) + %3:_(<4 x s16>) = G_ANYEXT %2(<4 x s8>) + $d0 = COPY %3(<4 x s16>) + RET_ReallyLR implicit $d0 + +... `````````` </details> https://github.com/llvm/llvm-project/pull/81581 _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
