[llvm] [GlobalISel] Import extract/insert subvector (PR #110287)
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Fri Sep 27 08:49:44 PDT 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-aarch64
Author: Thorsten Schütt (tschuett)
<details>
<summary>Changes</summary>
Tests are limited to fixed-length vectors.
Test: AArch64/GlobalISel/irtranslator-subvector.ll
Reference:
https://llvm.org/docs/LangRef.html#llvm-vector-extract-intrinsic
https://llvm.org/docs/LangRef.html#llvm-vector-insert-intrinsic
---
Full diff: https://github.com/llvm/llvm-project/pull/110287.diff
2 Files Affected:
- (modified) llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp (+14)
- (added) llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-subvector.ll (+78)
``````````diff
diff --git a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
index 7ff8d2446eec5d..a0649f712bd642 100644
--- a/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/IRTranslator.cpp
@@ -2588,6 +2588,20 @@ bool IRTranslator::translateKnownIntrinsic(const CallInst &CI, Intrinsic::ID ID,
getOrCreateVReg(*CI.getOperand(0)),
getOrCreateVReg(*CI.getOperand(1)));
return true;
+ case Intrinsic::vector_extract: {
+ ConstantInt *Index = cast<ConstantInt>(CI.getOperand(1));
+ MIRBuilder.buildExtractSubvector(getOrCreateVReg(CI),
+ getOrCreateVReg(*CI.getOperand(0)),
+ Index->getZExtValue());
+ return true;
+ }
+ case Intrinsic::vector_insert: {
+ ConstantInt *Index = cast<ConstantInt>(CI.getOperand(2));
+ MIRBuilder.buildInsertSubvector(
+ getOrCreateVReg(CI), getOrCreateVReg(*CI.getOperand(0)),
+ getOrCreateVReg(*CI.getOperand(1)), Index->getZExtValue());
+ return true;
+ }
case Intrinsic::prefetch: {
Value *Addr = CI.getOperand(0);
unsigned RW = cast<ConstantInt>(CI.getOperand(1))->getZExtValue();
diff --git a/llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-subvector.ll b/llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-subvector.ll
new file mode 100644
index 00000000000000..bdcd8e3d99af87
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/GlobalISel/irtranslator-subvector.ll
@@ -0,0 +1,78 @@
+; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+; RUN: llc -O0 -mtriple=aarch64-linux-gnu -global-isel -stop-after=irtranslator %s -o - | FileCheck %s
+
+define i32 @extract_v4i32_vector_insert_const(<4 x i32> %a, <2 x i32> %b, i32 %c) {
+ ; CHECK-LABEL: name: extract_v4i32_vector_insert_const
+ ; CHECK: bb.1.entry:
+ ; CHECK-NEXT: liveins: $d1, $q0, $w0
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $w0
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 1
+ ; CHECK-NEXT: [[INSERT_SUBVECTOR:%[0-9]+]]:_(<4 x s32>) = G_INSERT_SUBVECTOR [[COPY]], [[COPY1]](<2 x s32>), 0
+ ; CHECK-NEXT: [[EVEC:%[0-9]+]]:_(s32) = G_EXTRACT_VECTOR_ELT [[INSERT_SUBVECTOR]](<4 x s32>), [[C]](s64)
+ ; CHECK-NEXT: $w0 = COPY [[EVEC]](s32)
+ ; CHECK-NEXT: RET_ReallyLR implicit $w0
+entry:
+ %vector = call <4 x i32> @llvm.vector.insert.v4i32.v2i32(<4 x i32> %a, <2 x i32> %b, i64 0)
+ %d = extractelement <4 x i32> %vector, i32 1
+ ret i32 %d
+}
+
+define i32 @extract_v4i32_vector_insert(<4 x i32> %a, <2 x i32> %b, i32 %c) {
+ ; CHECK-LABEL: name: extract_v4i32_vector_insert
+ ; CHECK: bb.1.entry:
+ ; CHECK-NEXT: liveins: $d1, $q0, $w0
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $w0
+ ; CHECK-NEXT: [[INSERT_SUBVECTOR:%[0-9]+]]:_(<4 x s32>) = G_INSERT_SUBVECTOR [[COPY]], [[COPY1]](<2 x s32>), 0
+ ; CHECK-NEXT: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[COPY2]](s32)
+ ; CHECK-NEXT: [[EVEC:%[0-9]+]]:_(s32) = G_EXTRACT_VECTOR_ELT [[INSERT_SUBVECTOR]](<4 x s32>), [[ZEXT]](s64)
+ ; CHECK-NEXT: $w0 = COPY [[EVEC]](s32)
+ ; CHECK-NEXT: RET_ReallyLR implicit $w0
+entry:
+ %vector = call <4 x i32> @llvm.vector.insert.v4i32.v2i32(<4 x i32> %a, <2 x i32> %b, i64 0)
+ %d = extractelement <4 x i32> %vector, i32 %c
+ ret i32 %d
+}
+
+define i32 @extract_v4i32_vector_extract(<4 x i32> %a, <2 x i32> %b, i32 %c) {
+ ; CHECK-LABEL: name: extract_v4i32_vector_extract
+ ; CHECK: bb.1.entry:
+ ; CHECK-NEXT: liveins: $d1, $q0, $w0
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $w0
+ ; CHECK-NEXT: [[EXTRACT_SUBVECTOR:%[0-9]+]]:_(<4 x s32>) = G_EXTRACT_SUBVECTOR [[COPY]](<4 x s32>), 0
+ ; CHECK-NEXT: [[ZEXT:%[0-9]+]]:_(s64) = G_ZEXT [[COPY2]](s32)
+ ; CHECK-NEXT: [[EVEC:%[0-9]+]]:_(s32) = G_EXTRACT_VECTOR_ELT [[EXTRACT_SUBVECTOR]](<4 x s32>), [[ZEXT]](s64)
+ ; CHECK-NEXT: $w0 = COPY [[EVEC]](s32)
+ ; CHECK-NEXT: RET_ReallyLR implicit $w0
+entry:
+ %vector = call <4 x i32> @llvm.vector.extract.v2i32.v4i32(<4 x i32> %a, i64 0)
+ %d = extractelement <4 x i32> %vector, i32 %c
+ ret i32 %d
+}
+
+define i32 @extract_v4i32_vector_extract_const(<4 x i32> %a, <2 x i32> %b, i32 %c) {
+ ; CHECK-LABEL: name: extract_v4i32_vector_extract_const
+ ; CHECK: bb.1.entry:
+ ; CHECK-NEXT: liveins: $d1, $q0, $w0
+ ; CHECK-NEXT: {{ $}}
+ ; CHECK-NEXT: [[COPY:%[0-9]+]]:_(<4 x s32>) = COPY $q0
+ ; CHECK-NEXT: [[COPY1:%[0-9]+]]:_(<2 x s32>) = COPY $d1
+ ; CHECK-NEXT: [[COPY2:%[0-9]+]]:_(s32) = COPY $w0
+ ; CHECK-NEXT: [[C:%[0-9]+]]:_(s64) = G_CONSTANT i64 0
+ ; CHECK-NEXT: [[EXTRACT_SUBVECTOR:%[0-9]+]]:_(<4 x s32>) = G_EXTRACT_SUBVECTOR [[COPY]](<4 x s32>), 0
+ ; CHECK-NEXT: [[EVEC:%[0-9]+]]:_(s32) = G_EXTRACT_VECTOR_ELT [[EXTRACT_SUBVECTOR]](<4 x s32>), [[C]](s64)
+ ; CHECK-NEXT: $w0 = COPY [[EVEC]](s32)
+ ; CHECK-NEXT: RET_ReallyLR implicit $w0
+entry:
+ %vector = call <4 x i32> @llvm.vector.extract.v2i32.v4i32(<4 x i32> %a, i64 0)
+ %d = extractelement <4 x i32> %vector, i32 0
+ ret i32 %d
+}
``````````
</details>
https://github.com/llvm/llvm-project/pull/110287
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