3d18c8cd26
Similar to d39b4ce3ce8a3c256e01bdec2b140777a332a633 Using "eabi" or "gnueabi" for aarch64 targets is a common mistake and warned by Clang Driver. We want to avoid them elsewhere as well. Just use the common "aarch64" without other triple components.
393 lines
14 KiB
LLVM
393 lines
14 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=aarch64 < %s -verify-machineinstrs -enable-post-misched=false | FileCheck %s
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; RUN: llc -mtriple=aarch64 < %s -verify-machineinstrs -enable-post-misched=false -global-isel | FileCheck %s
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; Tests for prolog sequences for stack probing, when using a 64KiB stack guard.
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; 64k bytes is the largest frame we can probe in one go.
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define void @static_65536(ptr %out) #0 {
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; CHECK-LABEL: static_65536:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 65552
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 65536, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 64k+16 bytes, still needs just one probe.
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define void @static_65552(ptr %out) #0 {
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; CHECK-LABEL: static_65552:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 65552
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; CHECK-NEXT: str xzr, [sp], #-16
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; CHECK-NEXT: .cfi_def_cfa_offset 65568
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: add sp, sp, #16
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 65552, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 64k+1024 bytes, the largest frame which needs just one probe.
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define void @static_66560(ptr %out) #0 {
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; CHECK-LABEL: static_66560:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 65552
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #1024
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; CHECK-NEXT: .cfi_def_cfa_offset 66576
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 1040
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; CHECK-NEXT: add sp, sp, #1024
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 66560, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 64k+1024+16 bytes, the smallest frame which needs two probes.
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define void @static_66576(ptr %out) #0 {
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; CHECK-LABEL: static_66576:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 65552
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #1040
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; CHECK-NEXT: .cfi_def_cfa_offset 66592
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 1056
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; CHECK-NEXT: add sp, sp, #1040
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 66576, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 2*64k+1024, the largest frame needing two probes.
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define void @static_132096(ptr %out) #0 {
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; CHECK-LABEL: static_132096:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 65552
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 131088
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #1024
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; CHECK-NEXT: .cfi_def_cfa_offset 132112
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #32, lsl #12 // =131072
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; CHECK-NEXT: .cfi_def_cfa_offset 1040
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; CHECK-NEXT: add sp, sp, #1024
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 132096, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 5*64k-16, the largest frame probed without a loop.
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define void @static_327664(ptr %out) #0 {
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; CHECK-LABEL: static_327664:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 65552
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 131088
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 196624
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: .cfi_def_cfa_offset 262160
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: sub sp, sp, #15, lsl #12 // =61440
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; CHECK-NEXT: .cfi_def_cfa_offset 323600
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; CHECK-NEXT: sub sp, sp, #4080
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; CHECK-NEXT: .cfi_def_cfa_offset 327680
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #79, lsl #12 // =323584
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; CHECK-NEXT: .cfi_def_cfa_offset 4096
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; CHECK-NEXT: add sp, sp, #4080
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 327664, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 5*64k, smallest frame probed with a loop.
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define void @static_327680(ptr %out) #0 {
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; CHECK-LABEL: static_327680:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub x9, sp, #80, lsl #12 // =327680
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; CHECK-NEXT: .cfi_def_cfa w9, 327696
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; CHECK-NEXT: .LBB6_1: // %entry
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: cmp sp, x9
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; CHECK-NEXT: b.ne .LBB6_1
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; CHECK-NEXT: // %bb.2: // %entry
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; CHECK-NEXT: .cfi_def_cfa_register wsp
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #80, lsl #12 // =327680
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 327680, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 5*64k+1024, large enough to use a loop, but not a multiple of 64KiB
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; so has a reminder, but no extra probe.
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define void @static_328704(ptr %out) #0 {
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; CHECK-LABEL: static_328704:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub x9, sp, #80, lsl #12 // =327680
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; CHECK-NEXT: .cfi_def_cfa w9, 327696
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; CHECK-NEXT: .LBB7_1: // %entry
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: cmp sp, x9
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; CHECK-NEXT: b.ne .LBB7_1
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; CHECK-NEXT: // %bb.2: // %entry
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; CHECK-NEXT: .cfi_def_cfa_register wsp
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; CHECK-NEXT: sub sp, sp, #1024
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; CHECK-NEXT: .cfi_def_cfa_offset 328720
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #80, lsl #12 // =327680
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; CHECK-NEXT: .cfi_def_cfa_offset 1040
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; CHECK-NEXT: add sp, sp, #1024
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 328704, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; 5*64k+1040, large enough to use a loop, has a reminder and
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; an extra probe.
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define void @static_328720(ptr %out) #0 {
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; CHECK-LABEL: static_328720:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: str x29, [sp, #-16]! // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub x9, sp, #80, lsl #12 // =327680
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; CHECK-NEXT: .cfi_def_cfa w9, 327696
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; CHECK-NEXT: .LBB8_1: // %entry
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: cmp sp, x9
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; CHECK-NEXT: b.ne .LBB8_1
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; CHECK-NEXT: // %bb.2: // %entry
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; CHECK-NEXT: .cfi_def_cfa_register wsp
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; CHECK-NEXT: sub sp, sp, #1040
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; CHECK-NEXT: .cfi_def_cfa_offset 328736
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: add sp, sp, #80, lsl #12 // =327680
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; CHECK-NEXT: .cfi_def_cfa_offset 1056
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; CHECK-NEXT: add sp, sp, #1040
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: ldr x29, [sp], #16 // 8-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 328720, align 1
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store ptr %v, ptr %out, align 8
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ret void
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}
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; A small allocation, but with a very large alignment requirement. We do this
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; by moving SP far enough that a sufficiently-aligned block will exist
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; somewhere in the stack frame, so must probe the whole of that larger SP move.
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define void @static_16_align_131072(ptr %out) #0 {
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; CHECK-LABEL: static_16_align_131072:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: mov x29, sp
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; CHECK-NEXT: .cfi_def_cfa w29, 16
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; CHECK-NEXT: .cfi_offset w30, -8
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub x9, sp, #31, lsl #12 // =126976
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; CHECK-NEXT: sub x9, x9, #4080
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; CHECK-NEXT: and x9, x9, #0xfffffffffffe0000
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; CHECK-NEXT: .LBB9_1: // %entry
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; CHECK-NEXT: // =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: sub sp, sp, #16, lsl #12 // =65536
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; CHECK-NEXT: cmp sp, x9
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; CHECK-NEXT: b.le .LBB9_3
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; CHECK-NEXT: // %bb.2: // %entry
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; CHECK-NEXT: // in Loop: Header=BB9_1 Depth=1
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: b .LBB9_1
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; CHECK-NEXT: .LBB9_3: // %entry
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; CHECK-NEXT: mov sp, x9
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; CHECK-NEXT: ldr xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: mov sp, x29
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; CHECK-NEXT: .cfi_def_cfa wsp, 16
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; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w30
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 16, align 131072
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store ptr %v, ptr %out, align 8
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ret void
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}
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; A small allocation, but with a very large alignment requirement which
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; is nevertheless small enough as to not need a loop.
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define void @static_16_align_8192(ptr %out) #0 {
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; CHECK-LABEL: static_16_align_8192:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: mov x29, sp
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; CHECK-NEXT: .cfi_def_cfa w29, 16
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; CHECK-NEXT: .cfi_offset w30, -8
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub x9, sp, #1, lsl #12 // =4096
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; CHECK-NEXT: sub x9, x9, #4080
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; CHECK-NEXT: and sp, x9, #0xffffffffffffe000
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: mov sp, x29
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; CHECK-NEXT: .cfi_def_cfa wsp, 16
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; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
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; CHECK-NEXT: .cfi_def_cfa_offset 0
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; CHECK-NEXT: .cfi_restore w30
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; CHECK-NEXT: .cfi_restore w29
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; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 16, align 8192
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store ptr %v, ptr %out, align 8
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ret void
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}
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; A large allocation with a very large alignment requirement which
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; is nevertheless small enough as to not need a loop.
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define void @static_32752_align_32k(ptr %out) #0 {
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; CHECK-LABEL: static_32752_align_32k:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: stp x29, x30, [sp, #-16]! // 16-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 16
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; CHECK-NEXT: mov x29, sp
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; CHECK-NEXT: .cfi_def_cfa w29, 16
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; CHECK-NEXT: .cfi_offset w30, -8
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; CHECK-NEXT: .cfi_offset w29, -16
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; CHECK-NEXT: sub x9, sp, #7, lsl #12 // =28672
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; CHECK-NEXT: sub x9, x9, #4080
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; CHECK-NEXT: and sp, x9, #0xffffffffffff8000
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; CHECK-NEXT: str xzr, [sp]
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; CHECK-NEXT: mov x8, sp
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; CHECK-NEXT: str x8, [x0]
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; CHECK-NEXT: mov sp, x29
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; CHECK-NEXT: .cfi_def_cfa wsp, 16
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|
; CHECK-NEXT: ldp x29, x30, [sp], #16 // 16-byte Folded Reload
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|
; CHECK-NEXT: .cfi_def_cfa_offset 0
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|
; CHECK-NEXT: .cfi_restore w30
|
|
; CHECK-NEXT: .cfi_restore w29
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|
; CHECK-NEXT: ret
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entry:
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%v = alloca i8, i64 32752, align 32768
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|
store ptr %v, ptr %out, align 8
|
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ret void
|
|
}
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|
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attributes #0 = { uwtable(async) "probe-stack"="inline-asm" "stack-probe-size"="65536" "frame-pointer"="none" }
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