213 lines
5.9 KiB
YAML
213 lines
5.9 KiB
YAML
# RUN: llc -mtriple=x86_64-unknown-linux-gnu -run-pass shadow-call-stack -verify-machineinstrs -o - %s | FileCheck %s
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--- |
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define void @no_return() #0 { ret void }
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define void @normal_return() #0 { ret void }
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define void @normal_return_leaf_func() #0 { ret void }
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define void @short_leaf_func() #0 { ret void }
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define void @normal_tail_call() #0 { ret void }
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define void @r11_tail_call() #0 { ret void }
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define void @conditional_tail_call() #0 { ret void }
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define void @r10_live_in() #0 { ret void }
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attributes #0 = { shadowcallstack }
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...
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---
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# CHECK-LABEL: name: no_return
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name: no_return
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: true # not a leaf function
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body: |
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; CHECK: bb.0:
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bb.0:
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; CHECK-NEXT: $eax = MOV32ri 13
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$eax = MOV32ri 13
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...
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---
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# CHECK-LABEL: name: normal_return
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name: normal_return
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: true # not a leaf function
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body: |
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; CHECK: bb.0:
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bb.0:
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; CHECK: $r10 = MOV64rm $rsp, 1, $noreg, 0, $noreg
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; CHECK-NEXT: $r11 = XOR64rr undef $r11, undef $r11, implicit-def $eflags
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; CHECK-NEXT: ADD64mi8 $r11, 1, $noreg, 0, $gs, 8, implicit-def $eflags
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; CHECK-NEXT: $r11 = MOV64rm $r11, 1, $noreg, 0, $gs
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; CHECK-NEXT: MOV64mr $r11, 1, $noreg, 0, $gs, $r10
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; CHECK-NEXT: $eax = MOV32ri 13
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$eax = MOV32ri 13
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; CHECK-NEXT: $r11 = XOR64rr undef $r11, undef $r11, implicit-def $eflags
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; CHECK-NEXT: $r10 = MOV64rm $r11, 1, $noreg, 0, $gs
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; CHECK-NEXT: $r10 = MOV64rm $r10, 1, $noreg, 0, $gs
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; CHECK-NEXT: SUB64mi8 $r11, 1, $noreg, 0, $gs, 8, implicit-def $eflags
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; CHECK-NEXT: CMP64mr $rsp, 1, $noreg, 0, $noreg, $r10, implicit-def $eflags
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; CHECK-NEXT: JNE_1 %bb.1, implicit $eflags
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; CHECK-NEXT: RETQ $eax
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RETQ $eax
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; CHECK: bb.1:
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; CHECK-NEXT; TRAP
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...
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---
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# CHECK-LABEL: name: normal_return_leaf_func
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name: normal_return_leaf_func
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: false # leaf function
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body: |
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; CHECK: bb.0:
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; CHECK: liveins: $rcx
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bb.0:
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liveins: $rcx
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; CHECK: $rdx = MOV64rm $rsp, 1, $noreg, 0, $noreg
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; CHECK-NEXT: $eax = MOV32ri 0
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$eax = MOV32ri 0
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; CHECK-NEXT: CMP64ri8 $rcx, 5, implicit-def $eflags
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CMP64ri8 $rcx, 5, implicit-def $eflags
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; CHECK-NEXT: JA_1 %bb.1, implicit $eflags
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JA_1 %bb.1, implicit $eflags
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; CHECK-NEXT: JMP_1 %bb.2
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JMP_1 %bb.2
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; CHECK: bb.1
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; CHECK: liveins: $eax, $rdx
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bb.1:
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liveins: $eax
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; CHECKT: $eax = MOV32ri 1
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$eax = MOV32ri 1
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; CHECK: bb.2
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; CHECK: liveins: $eax, $rdx
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bb.2:
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liveins: $eax
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; CHECK: CMP64mr $rsp, 1, $noreg, 0, $noreg, $rdx, implicit-def $eflags
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; CHECK-NEXT: JNE_1 %bb.3, implicit $eflags
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; CHECK-NEXT: RETQ $eax
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RETQ $eax
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; CHECK: bb.3:
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; CHECK-NEXT; TRAP
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...
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---
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# CHECK-LABEL: name: short_leaf_func
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name: short_leaf_func
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: false # leaf function
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body: |
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; CHECK: bb.0:
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bb.0:
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; Ensure these are not counted as machine instructions
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CFI_INSTRUCTION 0
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CFI_INSTRUCTION 0
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CFI_INSTRUCTION 0
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DBG_VALUE 0
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DBG_VALUE 0
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DBG_VALUE 0
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; CHECK: $eax = MOV32ri 13
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$eax = MOV32ri 13
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; CHECK-NEXT: RETQ $eax
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RETQ $eax
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...
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---
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# CHECK-LABEL: name: normal_tail_call
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name: normal_tail_call
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: true # not a leaf function
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body: |
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; CHECK: bb.0:
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bb.0:
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; CHECK: $r10 = MOV64rm $rsp, 1, $noreg, 0, $noreg
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; CHECK-NEXT: $r11 = XOR64rr undef $r11, undef $r11, implicit-def $eflags
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; CHECK-NEXT: ADD64mi8 $r11, 1, $noreg, 0, $gs, 8, implicit-def $eflags
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; CHECK-NEXT: $r11 = MOV64rm $r11, 1, $noreg, 0, $gs
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; CHECK-NEXT: MOV64mr $r11, 1, $noreg, 0, $gs, $r10
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; CHECK-NEXT: $eax = MOV32ri 13
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$eax = MOV32ri 13
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; CHECK-NEXT: $r11 = XOR64rr undef $r11, undef $r11, implicit-def $eflags
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; CHECK-NEXT: $r10 = MOV64rm $r11, 1, $noreg, 0, $gs
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; CHECK-NEXT: $r10 = MOV64rm $r10, 1, $noreg, 0, $gs
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; CHECK-NEXT: SUB64mi8 $r11, 1, $noreg, 0, $gs, 8, implicit-def $eflags
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; CHECK-NEXT: CMP64mr $rsp, 1, $noreg, 0, $noreg, $r10, implicit-def $eflags
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; CHECK-NEXT: JNE_1 %bb.1, implicit $eflags
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; CHECK-NEXT: TAILJMPr64 $rax
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TAILJMPr64 $rax
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; CHECK: bb.1:
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; CHECK-NEXT; TRAP
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...
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---
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# CHECK-LABEL: name: r11_tail_call
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name: r11_tail_call
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: true # not a leaf function
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body: |
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; CHECK: bb.0:
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bb.0:
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; CHECK: $r10 = MOV64rm $rsp, 1, $noreg, 0, $noreg
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; CHECK-NEXT: $r11 = XOR64rr undef $r11, undef $r11, implicit-def $eflags
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; CHECK-NEXT: ADD64mi8 $r11, 1, $noreg, 0, $gs, 8, implicit-def $eflags
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; CHECK-NEXT: $r11 = MOV64rm $r11, 1, $noreg, 0, $gs
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; CHECK-NEXT: MOV64mr $r11, 1, $noreg, 0, $gs, $r10
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; CHECK-NEXT: $eax = MOV32ri 13
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$eax = MOV32ri 13
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; CHECK-NEXT: $r10 = XOR64rr undef $r10, undef $r10, implicit-def $eflags
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; CHECK-NEXT: $r10 = MOV64rm $r10, 1, $noreg, 0, $gs
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; CHECK-NEXT: $r10 = MOV64rm $r10, 1, $noreg, 0, $gs
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; CHECK-NEXT: SUB64mi8 $noreg, 1, $noreg, 0, $gs, 8, implicit-def $eflags
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; CHECK-NEXT: CMP64mr $rsp, 1, $noreg, 0, $noreg, $r10, implicit-def $eflags
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; CHECK-NEXT: JNE_1 %bb.1, implicit $eflags
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; CHECK-NEXT: TAILJMPr64 undef $r11
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TAILJMPr64 undef $r11
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; CHECK: bb.1:
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; CHECK-NEXT; TRAP
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...
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---
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# CHECK-LABEL: name: conditional_tail_call
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name: conditional_tail_call
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: true # not a leaf function
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body: |
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; CHECK: bb.0:
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bb.0:
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; CHECK: $eax = MOV32ri 13
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$eax = MOV32ri 13
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; CHECK-NEXT: TAILJMPd64_CC @conditional_tail_call, undef $eflags
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TAILJMPd64_CC @conditional_tail_call, undef $eflags
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...
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---
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# CHECK-LABEL: name: r10_live_in
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name: r10_live_in
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tracksRegLiveness: true
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frameInfo:
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adjustsStack: true # not a leaf function
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body: |
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; CHECK: bb.0:
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; CHECK: liveins: $r10
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bb.0:
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liveins: $r10
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; CHECK: $eax = MOV32ri 13
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$eax = MOV32ri 13
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; CHECK-NEXT: RETQ $eax
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RETQ $eax
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...
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