254 lines
9.5 KiB
Plaintext
254 lines
9.5 KiB
Plaintext
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# RUN: llc -mtriple=aarch64-linux-gnu -run-pass=prologepilog %s -o - | FileCheck %s
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# The tests below test the allocation of 128bit callee-saves
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# on the stack, specifically their offsets.
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# Padding of GPR64-registers is needed to ensure 16 byte alignment of
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# the stack pointer after the GPR64/FPR64 block (which is also needed
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# for the FPR128 saves when present).
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# This file also tests whether an emergency stack slot is allocated
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# when the stack frame is over a given size, caused by a series of
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# FPR128 saves. The alignment can leave a gap that can be scavenged
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# for stack slot scavenging, so it is important that the stack size
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# is properly estimated.
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--- |
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; ModuleID = '<stdin>'
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source_filename = "<stdin>"
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target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-linux-gnu"
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; Function Attrs: nounwind
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define aarch64_vector_pcs void @test_q10_q11_x19() nounwind { entry: unreachable }
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; Function Attrs: nounwind
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define aarch64_vector_pcs void @test_q10_q11_x19_x20() nounwind { entry: unreachable }
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; Function Attrs: nounwind
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define aarch64_vector_pcs void @test_q10_q11_x19_x20_x21() nounwind { entry: unreachable }
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; Function Attrs: nounwind
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define aarch64_vector_pcs void @test_q8_to_q23_x19_to_x30() nounwind { entry: unreachable }
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; Function Attrs: nounwind
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define aarch64_vector_pcs void @test_q8_to_q23_x19_to_x30_preinc() nounwind { entry: unreachable }
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...
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---
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name: test_q10_q11_x19
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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$x19 = IMPLICIT_DEF
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$q10 = IMPLICIT_DEF
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$q11 = IMPLICIT_DEF
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; Check that the alignment gap for the 8-byte x19 is padded
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; with another 8 bytes. The CSR region will look like this:
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; +-------------------+
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; |/////padding///////| (8 bytes)
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; | X19 | (8 bytes)
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; +-------------------+ <- SP -16
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; | Q10, Q11 | (32 bytes)
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; +-------------------+ <- SP -48
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; CHECK-LABEL: test_q10_q11_x19{{[[:space:]]}}
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; CHECK-DAG: $sp = frame-setup STPQpre killed $q11, killed $q10, $sp, -3 :: (store 16 into %stack.[[Q11:[0-9]+]]), (store 16 into %stack.[[Q10:[0-9]+]])
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; CHECK-DAG: - { id: [[Q11]], {{.*}}, offset: -48, size: 16, alignment: 16
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; CHECK-DAG: - { id: [[Q10]], {{.*}}, offset: -32, size: 16, alignment: 16
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; CHECK-DAG: frame-setup STRXui killed $x19, $sp, 4 :: (store 8 into %stack.[[X19:[0-9]+]])
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; CHECK-DAG: - { id: [[X19]], {{.*}}, offset: -16, size: 8, alignment: 16
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...
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---
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name: test_q10_q11_x19_x20
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alignment: 4
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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$x19 = IMPLICIT_DEF
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$x20 = IMPLICIT_DEF
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$q10 = IMPLICIT_DEF
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$q11 = IMPLICIT_DEF
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; +-------------------+
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; | X19, X20 | (16 bytes)
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; +-------------------+ <- SP -16
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; | Q10, Q11 | (32 bytes)
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; +-------------------+ <- SP -48
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; CHECK-LABEL: test_q10_q11_x19_x20{{[[:space:]]}}
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; CHECK-DAG: $sp = frame-setup STPQpre killed $q11, killed $q10, $sp, -3 :: (store 16 into %stack.[[Q11:[0-9]+]]), (store 16 into %stack.[[Q10:[0-9]+]])
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; CHECK-DAG: frame-setup STPXi killed $x20, killed $x19, $sp, 4 :: (store 8 into %stack.[[X20:[0-9]+]]), (store 8 into %stack.[[X19:[0-9]+]])
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; CHECK-DAG: - { id: [[Q11]], {{.*}}, offset: -48, size: 16, alignment: 16
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; CHECK-DAG: - { id: [[Q10]], {{.*}}, offset: -32, size: 16, alignment: 16
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; CHECK-DAG: - { id: [[X20]], {{.*}}, offset: -16, size: 8, alignment: 8
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; CHECK-DAG: - { id: [[X19]], {{.*}}, offset: -8, size: 8, alignment: 8
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...
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---
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name: test_q10_q11_x19_x20_x21
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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$x19 = IMPLICIT_DEF
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$x20 = IMPLICIT_DEF
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$x21 = IMPLICIT_DEF
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$q10 = IMPLICIT_DEF
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$q11 = IMPLICIT_DEF
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; Check that the alignment gap is padded with another 8 bytes.
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; The CSR region will look like this:
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; +-------------------+
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; | X19, X20 | (16 bytes)
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; +-------------------+ <- SP -16
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; |/////padding///////| (8 bytes)
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; | X21 | (8 bytes)
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; +-------------------+ <- SP -32
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; | Q10, Q11 | (32 bytes)
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; +-------------------+ <- SP -64
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; CHECK-LABEL: test_q10_q11_x19_x20_x21
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; CHECK-DAG: $sp = frame-setup STPQpre killed $q11, killed $q10, $sp, -4 :: (store 16 into %stack.[[Q11:[0-9]+]]), (store 16 into %stack.[[Q10:[0-9]+]])
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; CHECK-DAG: frame-setup STRXui killed $x21, $sp, 4 :: (store 8 into %stack.[[X21:[0-9]+]])
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; CHECK-DAG: frame-setup STPXi killed $x20, killed $x19, $sp, 6
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; CHECK-DAG: - { id: [[Q11]], {{.*}}, offset: -64, size: 16, alignment: 16
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; CHECK-DAG: - { id: [[Q10]], {{.*}}, offset: -48, size: 16, alignment: 16
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; CHECK-DAG: - { id: [[X21]], {{.*}}, offset: -32, size: 8, alignment: 16
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...
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---
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name: test_q8_to_q23_x19_to_x30
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tracksRegLiveness: true
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body: |
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bb.0.entry:
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$x19 = IMPLICIT_DEF
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$x20 = IMPLICIT_DEF
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$x21 = IMPLICIT_DEF
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$x22 = IMPLICIT_DEF
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$x23 = IMPLICIT_DEF
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$x24 = IMPLICIT_DEF
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$x25 = IMPLICIT_DEF
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$x26 = IMPLICIT_DEF
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$x27 = IMPLICIT_DEF
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$x28 = IMPLICIT_DEF
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$fp = IMPLICIT_DEF
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$lr = IMPLICIT_DEF
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$q8 = IMPLICIT_DEF
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$q9 = IMPLICIT_DEF
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$q10 = IMPLICIT_DEF
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$q11 = IMPLICIT_DEF
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$q12 = IMPLICIT_DEF
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$q13 = IMPLICIT_DEF
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$q14 = IMPLICIT_DEF
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$q15 = IMPLICIT_DEF
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$q16 = IMPLICIT_DEF
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$q17 = IMPLICIT_DEF
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$q18 = IMPLICIT_DEF
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$q19 = IMPLICIT_DEF
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$q20 = IMPLICIT_DEF
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$q21 = IMPLICIT_DEF
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$q22 = IMPLICIT_DEF
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$q23 = IMPLICIT_DEF
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; Test with more callee saves, which triggers 'BigStack' in
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; AArch64FrameLowering which in turn causes an emergency spill
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; slot to be allocated. The emergency spill slot is allocated
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; as close as possible to SP, so at SP + 0.
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; +-------------------+
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; | X19..X30 | (96 bytes)
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; +-------------------+ <- SP -96
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; | Q8..Q23 | (256 bytes)
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; +-------------------+ <- SP -352
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; | emergency slot | (16 bytes)
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; +-------------------+ <- SP -368
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; CHECK-LABEL: test_q8_to_q23_x19_to_x30
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; CHECK: $sp = frame-setup SUBXri $sp, 368, 0
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; CHECK-NEXT: frame-setup STPQi killed $q23, killed $q22, $sp, 1 :: (store 16 into %stack.{{[0-9]+}}), (store 16 into %stack.{{[0-9]+}})
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; CHECK-NEXT: frame-setup STPQi killed $q21, killed $q20, $sp, 3
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; CHECK-NEXT: frame-setup STPQi killed $q19, killed $q18, $sp, 5
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; CHECK-NEXT: frame-setup STPQi killed $q17, killed $q16, $sp, 7
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; CHECK-NEXT: frame-setup STPQi killed $q15, killed $q14, $sp, 9
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; CHECK-NEXT: frame-setup STPQi killed $q13, killed $q12, $sp, 11
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; CHECK-NEXT: frame-setup STPQi killed $q11, killed $q10, $sp, 13
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; CHECK-NEXT: frame-setup STPQi killed $q9, killed $q8, $sp, 15
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; CHECK-NEXT: frame-setup STPXi killed $fp, killed $lr, $sp, 34 :: (store 8 into %stack.{{[0-9]+}}), (store 8 into %stack.{{[0-9]+}})
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; CHECK-NEXT: frame-setup STPXi killed $x28, killed $x27, $sp, 36
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; CHECK-NEXT: frame-setup STPXi killed $x26, killed $x25, $sp, 38
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; CHECK-NEXT: frame-setup STPXi killed $x24, killed $x23, $sp, 40
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; CHECK-NEXT: frame-setup STPXi killed $x22, killed $x21, $sp, 42
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; CHECK-NEXT: frame-setup STPXi killed $x20, killed $x19, $sp, 44
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...
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---
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name: test_q8_to_q23_x19_to_x30_preinc
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tracksRegLiveness: true
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stack:
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- { id: 0, size: 160, alignment: 4, local-offset: 0 }
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constants:
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body: |
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bb.0.entry:
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$x19 = IMPLICIT_DEF
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$x20 = IMPLICIT_DEF
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$x21 = IMPLICIT_DEF
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$x22 = IMPLICIT_DEF
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$x23 = IMPLICIT_DEF
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$x24 = IMPLICIT_DEF
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$x25 = IMPLICIT_DEF
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$x26 = IMPLICIT_DEF
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$x27 = IMPLICIT_DEF
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$x28 = IMPLICIT_DEF
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$fp = IMPLICIT_DEF
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$lr = IMPLICIT_DEF
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$q8 = IMPLICIT_DEF
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$q9 = IMPLICIT_DEF
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$q10 = IMPLICIT_DEF
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$q11 = IMPLICIT_DEF
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$q12 = IMPLICIT_DEF
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$q13 = IMPLICIT_DEF
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$q14 = IMPLICIT_DEF
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$q15 = IMPLICIT_DEF
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$q16 = IMPLICIT_DEF
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$q17 = IMPLICIT_DEF
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$q18 = IMPLICIT_DEF
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$q19 = IMPLICIT_DEF
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$q20 = IMPLICIT_DEF
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$q21 = IMPLICIT_DEF
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$q22 = IMPLICIT_DEF
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$q23 = IMPLICIT_DEF
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; When the total stack size >= 512, it will use the pre-increment
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; rather than the 'sub sp, sp, <size>'.
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; +-------------------+
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; | X19..X30 | (96 bytes)
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; +-------------------+ <- SP -96
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; | Q8..Q23 | (256 bytes)
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; +-------------------+ <- SP -352
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; | 'obj' | (32 bytes)
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; +-------------------+ <- SP -384
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; | emergency slot | (16 bytes)
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; +-------------------+ <- SP -400
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; CHECK-LABEL: test_q8_to_q23_x19_to_x30_preinc
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; CHECK: $sp = frame-setup STPQpre killed $q23, killed $q22, $sp, -22 :: (store 16 into %stack.{{[0-9]+}}), (store 16 into %stack.{{[0-9]+}})
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; CHECK-NEXT: frame-setup STPQi killed $q21, killed $q20, $sp, 2
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; CHECK-NEXT: frame-setup STPQi killed $q19, killed $q18, $sp, 4
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; CHECK-NEXT: frame-setup STPQi killed $q17, killed $q16, $sp, 6
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; CHECK-NEXT: frame-setup STPQi killed $q15, killed $q14, $sp, 8
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; CHECK-NEXT: frame-setup STPQi killed $q13, killed $q12, $sp, 10
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; CHECK-NEXT: frame-setup STPQi killed $q11, killed $q10, $sp, 12
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; CHECK-NEXT: frame-setup STPQi killed $q9, killed $q8, $sp, 14
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; CHECK-NEXT: frame-setup STPXi killed $fp, killed $lr, $sp, 32 :: (store 8 into %stack.{{[0-9]+}}), (store 8 into %stack.{{[0-9]+}})
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; CHECK-NEXT: frame-setup STPXi killed $x28, killed $x27, $sp, 34
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; CHECK-NEXT: frame-setup STPXi killed $x26, killed $x25, $sp, 36
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; CHECK-NEXT: frame-setup STPXi killed $x24, killed $x23, $sp, 38
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; CHECK-NEXT: frame-setup STPXi killed $x22, killed $x21, $sp, 40
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; CHECK-NEXT: frame-setup STPXi killed $x20, killed $x19, $sp, 42
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; CHECK-NEXT: $sp = frame-setup SUBXri $sp, 176, 0
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...
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