[llvm] 6a395fe - [AArch64] Mark FMOVvXfY_ns as rematerializable, cheap (#169186)

via llvm-commits llvm-commits at lists.llvm.org
Tue Nov 25 08:29:40 PST 2025


Author: Guy David
Date: 2025-11-25T18:29:36+02:00
New Revision: 6a395fec1f7663e02c6607e8e10791838c949389

URL: https://github.com/llvm/llvm-project/commit/6a395fec1f7663e02c6607e8e10791838c949389
DIFF: https://github.com/llvm/llvm-project/commit/6a395fec1f7663e02c6607e8e10791838c949389.diff

LOG: [AArch64] Mark FMOVvXfY_ns as rematerializable, cheap (#169186)

Added: 
    llvm/test/CodeGen/AArch64/remat-fmov-vector-imm.mir

Modified: 
    llvm/lib/Target/AArch64/AArch64InstrInfo.td

Removed: 
    


################################################################################
diff  --git a/llvm/lib/Target/AArch64/AArch64InstrInfo.td b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
index 0d63a9121310e..03bad8ff8ac8a 100644
--- a/llvm/lib/Target/AArch64/AArch64InstrInfo.td
+++ b/llvm/lib/Target/AArch64/AArch64InstrInfo.td
@@ -8381,6 +8381,7 @@ def : InstAlias<"orr.4s $Vd, $imm", (ORRv4i32 V128:$Vd, imm0_255:$imm, 0)>;
 }
 
 // AdvSIMD FMOV
+let isReMaterializable = 1, isAsCheapAsAMove = 1 in {
 def FMOVv2f64_ns : SIMDModifiedImmVectorNoShift<1, 1, 0, 0b1111, V128, fpimm8,
                                               "fmov", ".2d",
                        [(set (v2f64 V128:$Rd), (AArch64fmov imm0_255:$imm8))]>;
@@ -8398,6 +8399,7 @@ def FMOVv8f16_ns : SIMDModifiedImmVectorNoShift<1, 0, 1, 0b1111, V128, fpimm8,
                                               "fmov", ".8h",
                        [(set (v8f16 V128:$Rd), (AArch64fmov imm0_255:$imm8))]>;
 } // Predicates = [HasNEON, HasFullFP16]
+}
 
 // AdvSIMD MOVI
 

diff  --git a/llvm/test/CodeGen/AArch64/remat-fmov-vector-imm.mir b/llvm/test/CodeGen/AArch64/remat-fmov-vector-imm.mir
new file mode 100644
index 0000000000000..a09de832738d6
--- /dev/null
+++ b/llvm/test/CodeGen/AArch64/remat-fmov-vector-imm.mir
@@ -0,0 +1,194 @@
+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=aarch64 -mattr=+neon,+fullfp16 -run-pass=greedy -verify-machineinstrs -o - %s | FileCheck %s
+
+# Test that FMOVvXfY_ns instructions marked as rematerializable are
+# rematerialized instead of being spilled when clobbered.
+
+--- |
+  declare void @bar_v2f64(<2 x double>)
+  declare void @bar_v4f32(<4 x float>)
+  declare void @bar_v2f32(<2 x float>)
+  declare void @bar_v4f16(<4 x half>)
+  declare void @bar_v8f16(<8 x half>)
+
+  define void @test_remat_v2f64() {
+    ret void
+  }
+
+  define void @test_remat_v4f32() {
+    ret void
+  }
+
+  define void @test_remat_v2f32() {
+    ret void
+  }
+
+  define void @test_remat_v4f16() {
+    ret void
+  }
+
+  define void @test_remat_v8f16() {
+    ret void
+  }
+...
+
+---
+name:            test_remat_v2f64
+tracksRegLiveness: true
+frameInfo:
+  adjustsStack: true
+body:             |
+  bb.0:
+    ; CHECK-LABEL: name: test_remat_v2f64
+    ; CHECK: [[FMOVv2f64_ns:%[0-9]+]]:fpr128 = FMOVv2f64_ns 127
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: $q0 = COPY [[FMOVv2f64_ns]]
+    ; CHECK-NEXT: BL @bar_v2f64, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: [[FMOVv2f64_ns1:%[0-9]+]]:fpr128 = FMOVv2f64_ns 127
+    ; CHECK-NEXT: $q0 = COPY [[FMOVv2f64_ns1]]
+    ; CHECK-NEXT: BL @bar_v2f64, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: RET_ReallyLR
+    %0:fpr128 = FMOVv2f64_ns 127
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $q0 = COPY %0
+    BL @bar_v2f64, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $q0 = COPY %0
+    BL @bar_v2f64, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $q0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    RET_ReallyLR
+...
+---
+name:            test_remat_v4f32
+tracksRegLiveness: true
+frameInfo:
+  adjustsStack: true
+body:             |
+  bb.0:
+    ; CHECK-LABEL: name: test_remat_v4f32
+    ; CHECK: [[FMOVv4f32_ns:%[0-9]+]]:fpr128 = FMOVv4f32_ns 112
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: $q0 = COPY [[FMOVv4f32_ns]]
+    ; CHECK-NEXT: BL @bar_v4f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: [[FMOVv4f32_ns1:%[0-9]+]]:fpr128 = FMOVv4f32_ns 112
+    ; CHECK-NEXT: $q0 = COPY [[FMOVv4f32_ns1]]
+    ; CHECK-NEXT: BL @bar_v4f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: RET_ReallyLR
+    %0:fpr128 = FMOVv4f32_ns 112
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $q0 = COPY %0
+    BL @bar_v4f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $q0 = COPY %0
+    BL @bar_v4f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $q0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    RET_ReallyLR
+...
+---
+name:            test_remat_v2f32
+tracksRegLiveness: true
+frameInfo:
+  adjustsStack: true
+body:             |
+  bb.0:
+    ; CHECK-LABEL: name: test_remat_v2f32
+    ; CHECK: [[FMOVv2f32_ns:%[0-9]+]]:fpr64 = FMOVv2f32_ns 115
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: $d0 = COPY [[FMOVv2f32_ns]]
+    ; CHECK-NEXT: BL @bar_v2f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $d0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: [[FMOVv2f32_ns1:%[0-9]+]]:fpr64 = FMOVv2f32_ns 115
+    ; CHECK-NEXT: $d0 = COPY [[FMOVv2f32_ns1]]
+    ; CHECK-NEXT: BL @bar_v2f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $d0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: RET_ReallyLR
+    %0:fpr64 = FMOVv2f32_ns 115
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $d0 = COPY %0
+    BL @bar_v2f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $d0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $d0 = COPY %0
+    BL @bar_v2f32, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $d0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    RET_ReallyLR
+...
+---
+name:            test_remat_v4f16
+tracksRegLiveness: true
+frameInfo:
+  adjustsStack: true
+body:             |
+  bb.0:
+    ; CHECK-LABEL: name: test_remat_v4f16
+    ; CHECK: [[FMOVv4f16_ns:%[0-9]+]]:fpr64 = FMOVv4f16_ns 124
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: $d0 = COPY [[FMOVv4f16_ns]]
+    ; CHECK-NEXT: BL @bar_v4f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $d0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: [[FMOVv4f16_ns1:%[0-9]+]]:fpr64 = FMOVv4f16_ns 124
+    ; CHECK-NEXT: $d0 = COPY [[FMOVv4f16_ns1]]
+    ; CHECK-NEXT: BL @bar_v4f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $d0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: RET_ReallyLR
+    %0:fpr64 = FMOVv4f16_ns 124
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $d0 = COPY %0
+    BL @bar_v4f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $d0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $d0 = COPY %0
+    BL @bar_v4f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $d0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    RET_ReallyLR
+...
+---
+name:            test_remat_v8f16
+tracksRegLiveness: true
+frameInfo:
+  adjustsStack: true
+body:             |
+  bb.0:
+    ; CHECK-LABEL: name: test_remat_v8f16
+    ; CHECK: [[FMOVv8f16_ns:%[0-9]+]]:fpr128 = FMOVv8f16_ns 128
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: $q0 = COPY [[FMOVv8f16_ns]]
+    ; CHECK-NEXT: BL @bar_v8f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ; CHECK-NEXT: ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: [[FMOVv8f16_ns1:%[0-9]+]]:fpr128 = FMOVv8f16_ns 128
+    ; CHECK-NEXT: $q0 = COPY [[FMOVv8f16_ns1]]
+    ; CHECK-NEXT: BL @bar_v8f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ; CHECK-NEXT: ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    ; CHECK-NEXT: RET_ReallyLR
+    %0:fpr128 = FMOVv8f16_ns 128
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $q0 = COPY %0
+    BL @bar_v8f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit $q0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    INLINEASM &"", 1 /* sideeffect attdialect */, 12 /* clobber */, implicit-def dead early-clobber $q0, 12 /* clobber */, implicit-def dead early-clobber $q1, 12 /* clobber */, implicit-def dead early-clobber $q2, 12 /* clobber */, implicit-def dead early-clobber $q3, 12 /* clobber */, implicit-def dead early-clobber $q4, 12 /* clobber */, implicit-def dead early-clobber $q5, 12 /* clobber */, implicit-def dead early-clobber $q6, 12 /* clobber */, implicit-def dead early-clobber $q7, 12 /* clobber */, implicit-def dead early-clobber $q8, 12 /* clobber */, implicit-def dead early-clobber $q9, 12 /* clobber */, implicit-def dead early-clobber $q10, 12 /* clobber */, implicit-def dead early-clobber $q11, 12 /* clobber */, implicit-def dead early-clobber $q12, 12 /* clobber */, implicit-def dead early-clobber $q13, 12 /* clobber */, implicit-def dead early-clobber $q14, 12 /* clobber */, implicit-def dead early-clobber $q15, 12 /* clobber */, implicit-def dead early-clobber $q16, 12 /* clobber */, implicit-def dead early-clobber $q17, 12 /* clobber */, implicit-def dead early-clobber $q18, 12 /* clobber */, implicit-def dead early-clobber $q19, 12 /* clobber */, implicit-def dead early-clobber $q20, 12 /* clobber */, implicit-def dead early-clobber $q21, 12 /* clobber */, implicit-def dead early-clobber $q22, 12 /* clobber */, implicit-def dead early-clobber $q23, 12 /* clobber */, implicit-def dead early-clobber $q24, 12 /* clobber */, implicit-def dead early-clobber $q25, 12 /* clobber */, implicit-def dead early-clobber $q26, 12 /* clobber */, implicit-def dead early-clobber $q27, 12 /* clobber */, implicit-def dead early-clobber $q28, 12 /* clobber */, implicit-def dead early-clobber $q29, 12 /* clobber */, implicit-def dead early-clobber $q30, 12 /* clobber */, implicit-def dead early-clobber $q31
+    ADJCALLSTACKDOWN 0, 0, implicit-def dead $sp, implicit $sp
+    $q0 = COPY %0
+    BL @bar_v8f16, csr_aarch64_aapcs, implicit-def dead $lr, implicit $sp, implicit killed $q0, implicit-def $sp
+    ADJCALLSTACKUP 0, 0, implicit-def dead $sp, implicit $sp
+    RET_ReallyLR
+...


        


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