[llvm] [AArch64][SVE] Added optimisation for SVE intrinsics for no active lanes (PR #73943)
via llvm-commits
llvm-commits at lists.llvm.org
Thu Nov 30 06:22:45 PST 2023
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-llvm-transforms
Author: Mark Harley (MarkAHarley)
<details>
<summary>Changes</summary>
Closes #<!-- -->56573
This patch introduces optimisations for SVE intrinsic function calls which have all false predicates.
---
Patch is 179.90 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/73943.diff
3 Files Affected:
- (modified) llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp (+122-44)
- (added) llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-comb-m-forms-no-active-lanes.ll (+1324)
- (added) llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-comb-u-forms-no-active-lanes.ll (+1318)
``````````diff
diff --git a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
index b5b8b68291786dc..a0e42a183f1d90d 100644
--- a/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
+++ b/llvm/lib/Target/AArch64/AArch64TargetTransformInfo.cpp
@@ -1406,9 +1406,30 @@ static std::optional<Instruction *> instCombineSVEAllActive(IntrinsicInst &II,
return &II;
}
+// Optimize operations that take an all false predicate or send them for
+// canonicalization.
+static std::optional<Instruction *>
+instCombineSVEAllOrNoActive(InstCombiner &IC, IntrinsicInst &II,
+ Intrinsic::ID IID) {
+ if (match(II.getOperand(0), m_ZeroInt())) {
+ if (II.getIntrinsicID() != IID)
+ // llvm_ir, pred(0), op1, op2 - Spec says to return op1 when all lanes are
+ // inactive for sv[func]_m or sv[func]_z
+ return IC.replaceInstUsesWith(II, II.getOperand(1));
+ else
+ // llvm_ir_u, pred(0), op1, op2 - Spec says to return undef when all lanes
+ // are inactive for sv[func]_x
+ return IC.replaceInstUsesWith(II, UndefValue::get(II.getType()));
+ }
+ if (II.getIntrinsicID() != IID)
+ return instCombineSVEAllActive(II, IID);
+ return std::nullopt;
+}
+
static std::optional<Instruction *> instCombineSVEVectorAdd(InstCombiner &IC,
IntrinsicInst &II) {
- if (auto II_U = instCombineSVEAllActive(II, Intrinsic::aarch64_sve_add_u))
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_add_u))
return II_U;
if (auto MLA = instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_mul,
Intrinsic::aarch64_sve_mla>(
@@ -1421,9 +1442,22 @@ static std::optional<Instruction *> instCombineSVEVectorAdd(InstCombiner &IC,
return std::nullopt;
}
+static std::optional<Instruction *>
+instCombineSVEVectorAddU(InstCombiner &IC, IntrinsicInst &II) {
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_add_u))
+ return II_U;
+ else {
+ return instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_mul_u,
+ Intrinsic::aarch64_sve_mla_u>(
+ IC, II, true);
+ }
+}
+
static std::optional<Instruction *>
instCombineSVEVectorFAdd(InstCombiner &IC, IntrinsicInst &II) {
- if (auto II_U = instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fadd_u))
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fadd_u))
return II_U;
if (auto FMLA =
instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_fmul,
@@ -1445,6 +1479,9 @@ instCombineSVEVectorFAdd(InstCombiner &IC, IntrinsicInst &II) {
static std::optional<Instruction *>
instCombineSVEVectorFAddU(InstCombiner &IC, IntrinsicInst &II) {
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fadd_u))
+ return II_U;
if (auto FMLA =
instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_fmul,
Intrinsic::aarch64_sve_fmla>(IC, II,
@@ -1465,7 +1502,8 @@ instCombineSVEVectorFAddU(InstCombiner &IC, IntrinsicInst &II) {
static std::optional<Instruction *>
instCombineSVEVectorFSub(InstCombiner &IC, IntrinsicInst &II) {
- if (auto II_U = instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fsub_u))
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fsub_u))
return II_U;
if (auto FMLS =
instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_fmul,
@@ -1487,6 +1525,9 @@ instCombineSVEVectorFSub(InstCombiner &IC, IntrinsicInst &II) {
static std::optional<Instruction *>
instCombineSVEVectorFSubU(InstCombiner &IC, IntrinsicInst &II) {
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fsub_u))
+ return II_U;
if (auto FMLS =
instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_fmul,
Intrinsic::aarch64_sve_fmls>(IC, II,
@@ -1507,7 +1548,8 @@ instCombineSVEVectorFSubU(InstCombiner &IC, IntrinsicInst &II) {
static std::optional<Instruction *> instCombineSVEVectorSub(InstCombiner &IC,
IntrinsicInst &II) {
- if (auto II_U = instCombineSVEAllActive(II, Intrinsic::aarch64_sve_sub_u))
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_sub_u))
return II_U;
if (auto MLS = instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_mul,
Intrinsic::aarch64_sve_mls>(
@@ -1516,6 +1558,18 @@ static std::optional<Instruction *> instCombineSVEVectorSub(InstCombiner &IC,
return std::nullopt;
}
+static std::optional<Instruction *>
+instCombineSVEVectorSubU(InstCombiner &IC, IntrinsicInst &II) {
+ if (auto II_U =
+ instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_sub_u))
+ return II_U;
+ else {
+ return instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_mul_u,
+ Intrinsic::aarch64_sve_mls_u>(
+ IC, II, true);
+ }
+}
+
static std::optional<Instruction *> instCombineSVEVectorMul(InstCombiner &IC,
IntrinsicInst &II,
Intrinsic::ID IID) {
@@ -1523,10 +1577,8 @@ static std::optional<Instruction *> instCombineSVEVectorMul(InstCombiner &IC,
auto *OpMultiplicand = II.getOperand(1);
auto *OpMultiplier = II.getOperand(2);
- // Canonicalise a non _u intrinsic only.
- if (II.getIntrinsicID() != IID)
- if (auto II_U = instCombineSVEAllActive(II, IID))
- return II_U;
+ if (auto II_U = instCombineSVEAllOrNoActive(IC, II, IID))
+ return II_U;
// Return true if a given instruction is a unit splat value, false otherwise.
auto IsUnitSplat = [](auto *I) {
@@ -1891,34 +1943,45 @@ AArch64TTIImpl::instCombineIntrinsic(InstCombiner &IC,
case Intrinsic::aarch64_sve_ptest_last:
return instCombineSVEPTest(IC, II);
case Intrinsic::aarch64_sve_fabd:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fabd_u);
+ case Intrinsic::aarch64_sve_fabd_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fabd_u);
case Intrinsic::aarch64_sve_fadd:
return instCombineSVEVectorFAdd(IC, II);
case Intrinsic::aarch64_sve_fadd_u:
return instCombineSVEVectorFAddU(IC, II);
case Intrinsic::aarch64_sve_fdiv:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fdiv_u);
+ case Intrinsic::aarch64_sve_fdiv_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fdiv_u);
case Intrinsic::aarch64_sve_fmax:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fmax_u);
+ case Intrinsic::aarch64_sve_fmax_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fmax_u);
case Intrinsic::aarch64_sve_fmaxnm:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fmaxnm_u);
+ case Intrinsic::aarch64_sve_fmaxnm_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fmaxnm_u);
case Intrinsic::aarch64_sve_fmin:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fmin_u);
+ case Intrinsic::aarch64_sve_fmin_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fmin_u);
case Intrinsic::aarch64_sve_fminnm:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fminnm_u);
+ case Intrinsic::aarch64_sve_fminnm_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fminnm_u);
case Intrinsic::aarch64_sve_fmla:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fmla_u);
+ case Intrinsic::aarch64_sve_fmla_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fmla_u);
case Intrinsic::aarch64_sve_fmls:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fmls_u);
+ case Intrinsic::aarch64_sve_fmls_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fmls_u);
case Intrinsic::aarch64_sve_fmul:
case Intrinsic::aarch64_sve_fmul_u:
return instCombineSVEVectorMul(IC, II, Intrinsic::aarch64_sve_fmul_u);
case Intrinsic::aarch64_sve_fmulx:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fmulx_u);
+ case Intrinsic::aarch64_sve_fmulx_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fmulx_u);
case Intrinsic::aarch64_sve_fnmla:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fnmla_u);
+ case Intrinsic::aarch64_sve_fnmla_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fnmla_u);
case Intrinsic::aarch64_sve_fnmls:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_fnmls_u);
+ case Intrinsic::aarch64_sve_fnmls_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_fnmls_u);
case Intrinsic::aarch64_sve_fsub:
return instCombineSVEVectorFSub(IC, II);
case Intrinsic::aarch64_sve_fsub_u:
@@ -1926,56 +1989,71 @@ AArch64TTIImpl::instCombineIntrinsic(InstCombiner &IC,
case Intrinsic::aarch64_sve_add:
return instCombineSVEVectorAdd(IC, II);
case Intrinsic::aarch64_sve_add_u:
- return instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_mul_u,
- Intrinsic::aarch64_sve_mla_u>(
- IC, II, true);
+ return instCombineSVEVectorAddU(IC, II);
case Intrinsic::aarch64_sve_mla:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_mla_u);
+ case Intrinsic::aarch64_sve_mla_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_mla_u);
case Intrinsic::aarch64_sve_mls:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_mls_u);
+ case Intrinsic::aarch64_sve_mls_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_mls_u);
case Intrinsic::aarch64_sve_mul:
case Intrinsic::aarch64_sve_mul_u:
return instCombineSVEVectorMul(IC, II, Intrinsic::aarch64_sve_mul_u);
case Intrinsic::aarch64_sve_sabd:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_sabd_u);
+ case Intrinsic::aarch64_sve_sabd_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_sabd_u);
case Intrinsic::aarch64_sve_smax:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_smax_u);
+ case Intrinsic::aarch64_sve_smax_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_smax_u);
case Intrinsic::aarch64_sve_smin:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_smin_u);
+ case Intrinsic::aarch64_sve_smin_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_smin_u);
case Intrinsic::aarch64_sve_smulh:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_smulh_u);
+ case Intrinsic::aarch64_sve_smulh_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_smulh_u);
case Intrinsic::aarch64_sve_sub:
return instCombineSVEVectorSub(IC, II);
case Intrinsic::aarch64_sve_sub_u:
- return instCombineSVEVectorFuseMulAddSub<Intrinsic::aarch64_sve_mul_u,
- Intrinsic::aarch64_sve_mls_u>(
- IC, II, true);
+ return instCombineSVEVectorSubU(IC, II);
case Intrinsic::aarch64_sve_uabd:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_uabd_u);
+ case Intrinsic::aarch64_sve_uabd_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_uabd_u);
case Intrinsic::aarch64_sve_umax:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_umax_u);
+ case Intrinsic::aarch64_sve_umax_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_umax_u);
case Intrinsic::aarch64_sve_umin:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_umin_u);
+ case Intrinsic::aarch64_sve_umin_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_umin_u);
case Intrinsic::aarch64_sve_umulh:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_umulh_u);
+ case Intrinsic::aarch64_sve_umulh_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_umulh_u);
case Intrinsic::aarch64_sve_asr:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_asr_u);
+ case Intrinsic::aarch64_sve_asr_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_asr_u);
case Intrinsic::aarch64_sve_lsl:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_lsl_u);
+ case Intrinsic::aarch64_sve_lsl_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_lsl_u);
case Intrinsic::aarch64_sve_lsr:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_lsr_u);
+ case Intrinsic::aarch64_sve_lsr_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_lsr_u);
case Intrinsic::aarch64_sve_and:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_and_u);
+ case Intrinsic::aarch64_sve_and_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_and_u);
case Intrinsic::aarch64_sve_bic:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_bic_u);
+ case Intrinsic::aarch64_sve_bic_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_bic_u);
case Intrinsic::aarch64_sve_eor:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_eor_u);
+ case Intrinsic::aarch64_sve_eor_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_eor_u);
case Intrinsic::aarch64_sve_orr:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_orr_u);
+ case Intrinsic::aarch64_sve_orr_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_orr_u);
case Intrinsic::aarch64_sve_sqsub:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_sqsub_u);
+ case Intrinsic::aarch64_sve_sqsub_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_sqsub_u);
case Intrinsic::aarch64_sve_uqsub:
- return instCombineSVEAllActive(II, Intrinsic::aarch64_sve_uqsub_u);
+ case Intrinsic::aarch64_sve_uqsub_u:
+ return instCombineSVEAllOrNoActive(IC, II, Intrinsic::aarch64_sve_uqsub_u);
case Intrinsic::aarch64_sve_tbl:
return instCombineSVETBL(IC, II);
case Intrinsic::aarch64_sve_uunpkhi:
diff --git a/llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-comb-m-forms-no-active-lanes.ll b/llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-comb-m-forms-no-active-lanes.ll
new file mode 100644
index 000000000000000..56fe0a18f65c1d8
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/AArch64/sve-intrinsic-comb-m-forms-no-active-lanes.ll
@@ -0,0 +1,1324 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
+; RUN: opt -S -passes=instcombine < %s | FileCheck %s
+
+target triple = "aarch64-unknown-linux-gnu"
+
+; Replace SVE _m intrinsics with their first operand when the predicate is all false.
+
+; Float arithmetic
+
+declare <vscale x 8 x half> @llvm.aarch64.sve.fabd.nxv8f16(<vscale x 8 x i1>, <vscale x 8 x half>, <vscale x 8 x half>)
+define <vscale x 8 x half> @replace_fabd_intrinsic_half(<vscale x 8 x half> %a, <vscale x 8 x half> %b) #0 {
+; CHECK-LABEL: define <vscale x 8 x half> @replace_fabd_intrinsic_half
+; CHECK-SAME: (<vscale x 8 x half> [[A:%.*]], <vscale x 8 x half> [[B:%.*]]) #[[ATTR1:[0-9]+]] {
+; CHECK-NEXT: ret <vscale x 8 x half> [[A]]
+;
+ %1 = tail call fast <vscale x 8 x half> @llvm.aarch64.sve.fabd.nxv8f16(<vscale x 8 x i1> zeroinitializer, <vscale x 8 x half> %a, <vscale x 8 x half> %b)
+ ret <vscale x 8 x half> %1
+}
+
+declare <vscale x 4 x float> @llvm.aarch64.sve.fabd.nxv4f32(<vscale x 4 x i1>, <vscale x 4 x float>, <vscale x 4 x float>)
+define <vscale x 4 x float> @replace_fabd_intrinsic_float(<vscale x 4 x float> %a, <vscale x 4 x float> %b) #0 {
+; CHECK-LABEL: define <vscale x 4 x float> @replace_fabd_intrinsic_float
+; CHECK-SAME: (<vscale x 4 x float> [[A:%.*]], <vscale x 4 x float> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 4 x float> [[A]]
+;
+ %1 = tail call fast <vscale x 4 x float> @llvm.aarch64.sve.fabd.nxv4f32(<vscale x 4 x i1> zeroinitializer, <vscale x 4 x float> %a, <vscale x 4 x float> %b)
+ ret <vscale x 4 x float> %1
+}
+
+declare <vscale x 2 x double> @llvm.aarch64.sve.fabd.nxv2f64(<vscale x 2 x i1>, <vscale x 2 x double>, <vscale x 2 x double>)
+define <vscale x 2 x double> @replace_fabd_intrinsic_double(<vscale x 2 x double> %a, <vscale x 2 x double> %b) #0 {
+; CHECK-LABEL: define <vscale x 2 x double> @replace_fabd_intrinsic_double
+; CHECK-SAME: (<vscale x 2 x double> [[A:%.*]], <vscale x 2 x double> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 2 x double> [[A]]
+;
+ %1 = tail call fast <vscale x 2 x double> @llvm.aarch64.sve.fabd.nxv2f64(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x double> %a, <vscale x 2 x double> %b)
+ ret <vscale x 2 x double> %1
+}
+
+; aarch64_sve_fadd intrinsic combines to a LLVM instruction fadd.
+
+declare <vscale x 8 x half> @llvm.aarch64.sve.fadd.nxv8f16(<vscale x 8 x i1>, <vscale x 8 x half>, <vscale x 8 x half>)
+define <vscale x 8 x half> @replace_fadd_intrinsic_half(<vscale x 8 x half> %a, <vscale x 8 x half> %b) #0 {
+; CHECK-LABEL: define <vscale x 8 x half> @replace_fadd_intrinsic_half
+; CHECK-SAME: (<vscale x 8 x half> [[A:%.*]], <vscale x 8 x half> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 8 x half> [[A]]
+;
+ %1 = tail call fast <vscale x 8 x half> @llvm.aarch64.sve.fadd.nxv8f16(<vscale x 8 x i1> zeroinitializer, <vscale x 8 x half> %a, <vscale x 8 x half> %b)
+ ret <vscale x 8 x half> %1
+}
+
+declare <vscale x 4 x float> @llvm.aarch64.sve.fadd.nxv4f32(<vscale x 4 x i1>, <vscale x 4 x float>, <vscale x 4 x float>)
+define <vscale x 4 x float> @replace_fadd_intrinsic_float(<vscale x 4 x float> %a, <vscale x 4 x float> %b) #0 {
+; CHECK-LABEL: define <vscale x 4 x float> @replace_fadd_intrinsic_float
+; CHECK-SAME: (<vscale x 4 x float> [[A:%.*]], <vscale x 4 x float> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 4 x float> [[A]]
+;
+ %1 = tail call fast <vscale x 4 x float> @llvm.aarch64.sve.fadd.nxv4f32(<vscale x 4 x i1> zeroinitializer, <vscale x 4 x float> %a, <vscale x 4 x float> %b)
+ ret <vscale x 4 x float> %1
+}
+
+declare <vscale x 2 x double> @llvm.aarch64.sve.fadd.nxv2f64(<vscale x 2 x i1>, <vscale x 2 x double>, <vscale x 2 x double>)
+define <vscale x 2 x double> @replace_fadd_intrinsic_double(<vscale x 2 x double> %a, <vscale x 2 x double> %b) #0 {
+; CHECK-LABEL: define <vscale x 2 x double> @replace_fadd_intrinsic_double
+; CHECK-SAME: (<vscale x 2 x double> [[A:%.*]], <vscale x 2 x double> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 2 x double> [[A]]
+;
+ %1 = tail call fast <vscale x 2 x double> @llvm.aarch64.sve.fadd.nxv2f64(<vscale x 2 x i1> zeroinitializer, <vscale x 2 x double> %a, <vscale x 2 x double> %b)
+ ret <vscale x 2 x double> %1
+}
+
+declare <vscale x 8 x half> @llvm.aarch64.sve.fdiv.nxv8f16(<vscale x 8 x i1>, <vscale x 8 x half>, <vscale x 8 x half>)
+define <vscale x 8 x half> @replace_fdiv_intrinsic_half(<vscale x 8 x half> %a, <vscale x 8 x half> %b) #0 {
+; CHECK-LABEL: define <vscale x 8 x half> @replace_fdiv_intrinsic_half
+; CHECK-SAME: (<vscale x 8 x half> [[A:%.*]], <vscale x 8 x half> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 8 x half> [[A]]
+;
+ %1 = tail call fast <vscale x 8 x half> @llvm.aarch64.sve.fdiv.nxv8f16(<vscale x 8 x i1> zeroinitializer, <vscale x 8 x half> %a, <vscale x 8 x half> %b)
+ ret <vscale x 8 x half> %1
+}
+
+declare <vscale x 4 x float> @llvm.aarch64.sve.fdiv.nxv4f32(<vscale x 4 x i1>, <vscale x 4 x float>, <vscale x 4 x float>)
+define <vscale x 4 x float> @replace_fdiv_intrinsic_float(<vscale x 4 x float> %a, <vscale x 4 x float> %b) #0 {
+; CHECK-LABEL: define <vscale x 4 x float> @replace_fdiv_intrinsic_float
+; CHECK-SAME: (<vscale x 4 x float> [[A:%.*]], <vscale x 4 x float> [[B:%.*]]) #[[ATTR1]] {
+; CHECK-NEXT: ret <vscale x 4 x float> [[A]]
+;
+ %1 = tail call fast <vscale x 4 x float> @llvm.aarch64.sve.fdiv.nxv4f32(<vscale x 4 x i1> zeroinitializer, <vscale x 4 x float> %a, <vscale x 4...
[truncated]
``````````
</details>
https://github.com/llvm/llvm-project/pull/73943
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