503c55e170
Currently, the SLS hardening pass is run before the machine outliner, which means that the outliner creates new functions and calls which do not have the SLS hardening applied. The fix for this is to move the SLS passes to after the outliner, as has recently been done for the return address signing pass. This also avoids a bug where the SLS outliner emits code with instructions after a return, which the outliner doesn't correctly handle.
123 lines
4.2 KiB
LLVM
123 lines
4.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc < %s | FileCheck %s
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; Test case to demonstrate a bug where calls to OUTLINED_FUNCTION_1 are
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; inserted at a point where LR is live.
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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"
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define hidden void @_ZTv0_n24_N2C6D1Ev(ptr %this) minsize sspreq "target-features"="+harden-sls-retbr" {
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; CHECK-LABEL: _ZTv0_n24_N2C6D1Ev:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: sub sp, sp, #32
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; CHECK-NEXT: str x30, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: .cfi_offset w30, -16
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; CHECK-NEXT: bl OUTLINED_FUNCTION_0
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; CHECK-NEXT: b.ne .LBB0_2
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; CHECK-NEXT: // %bb.1: // %entry
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; CHECK-NEXT: ldr x30, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: add x0, x0, x8
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; CHECK-NEXT: add sp, sp, #32
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; CHECK-NEXT: b _ZN2C6D1Ev
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; CHECK-NEXT: dsb sy
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; CHECK-NEXT: isb
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; CHECK-NEXT: .LBB0_2: // %entry
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; CHECK-NEXT: bl __stack_chk_fail
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entry:
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%0 = load ptr, ptr %this, align 8
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%1 = getelementptr inbounds i8, ptr %0, i64 -24
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%2 = load i64, ptr %1, align 8
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%3 = getelementptr inbounds i8, ptr %this, i64 %2
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tail call void @_ZN2C6D1Ev(ptr %3)
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ret void
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}
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;
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define hidden void @_ZTv0_n24_N2C6D0Ev(ptr %this) minsize sspreq "target-features"="+harden-sls-retbr" {
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; CHECK-LABEL: _ZTv0_n24_N2C6D0Ev:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: sub sp, sp, #32
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; CHECK-NEXT: str x30, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: .cfi_offset w30, -16
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; CHECK-NEXT: bl OUTLINED_FUNCTION_0
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; CHECK-NEXT: b.ne .LBB1_2
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; CHECK-NEXT: // %bb.1: // %entry
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; CHECK-NEXT: ldr x30, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: add x0, x0, x8
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; CHECK-NEXT: add sp, sp, #32
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; CHECK-NEXT: b _ZN2C6D0Ev
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; CHECK-NEXT: dsb sy
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; CHECK-NEXT: isb
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; CHECK-NEXT: .LBB1_2: // %entry
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; CHECK-NEXT: bl __stack_chk_fail
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entry:
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%0 = load ptr, ptr %this, align 8
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%1 = getelementptr inbounds i8, ptr %0, i64 -24
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%2 = load i64, ptr %1, align 8
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%3 = getelementptr inbounds i8, ptr %this, i64 %2
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tail call void @_ZN2C6D0Ev(ptr %3)
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ret void
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}
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define hidden void @_ZTv0_n24_N3C10D1Ev(ptr %this) minsize sspreq "target-features"="+harden-sls-retbr" {
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; CHECK-LABEL: _ZTv0_n24_N3C10D1Ev:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: sub sp, sp, #32
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; CHECK-NEXT: str x30, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: .cfi_offset w30, -16
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; CHECK-NEXT: bl OUTLINED_FUNCTION_0
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; CHECK-NEXT: b.ne .LBB2_2
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; CHECK-NEXT: // %bb.1: // %entry
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; CHECK-NEXT: ldr x30, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: add x0, x0, x8
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; CHECK-NEXT: add sp, sp, #32
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; CHECK-NEXT: b _ZN3C10D1Ev
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; CHECK-NEXT: dsb sy
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; CHECK-NEXT: isb
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; CHECK-NEXT: .LBB2_2: // %entry
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; CHECK-NEXT: bl __stack_chk_fail
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entry:
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%0 = load ptr, ptr %this, align 8
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%1 = getelementptr inbounds i8, ptr %0, i64 -24
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%2 = load i64, ptr %1, align 8
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%3 = getelementptr inbounds i8, ptr %this, i64 %2
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tail call void @_ZN3C10D1Ev(ptr %3)
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ret void
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}
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define hidden void @_ZTv0_n24_N3C10D0Ev(ptr %this) minsize sspreq "target-features"="+harden-sls-retbr" {
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; CHECK-LABEL: _ZTv0_n24_N3C10D0Ev:
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; CHECK: // %bb.0: // %entry
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; CHECK-NEXT: sub sp, sp, #32
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; CHECK-NEXT: str x30, [sp, #16] // 8-byte Folded Spill
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; CHECK-NEXT: .cfi_def_cfa_offset 32
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; CHECK-NEXT: .cfi_offset w30, -16
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; CHECK-NEXT: bl OUTLINED_FUNCTION_0
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; CHECK-NEXT: b.ne .LBB3_2
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; CHECK-NEXT: // %bb.1: // %entry
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; CHECK-NEXT: ldr x30, [sp, #16] // 8-byte Folded Reload
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; CHECK-NEXT: add x0, x0, x8
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; CHECK-NEXT: add sp, sp, #32
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; CHECK-NEXT: b _ZN3C10D0Ev
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; CHECK-NEXT: dsb sy
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; CHECK-NEXT: isb
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; CHECK-NEXT: .LBB3_2: // %entry
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; CHECK-NEXT: bl __stack_chk_fail
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entry:
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%0 = load ptr, ptr %this, align 8
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%1 = getelementptr inbounds i8, ptr %0, i64 -24
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%2 = load i64, ptr %1, align 8
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%3 = getelementptr inbounds i8, ptr %this, i64 %2
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tail call void @_ZN3C10D0Ev(ptr %3)
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ret void
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}
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declare void @_ZN2C6D1Ev(ptr %this)
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declare void @_ZN3C10D1Ev(ptr %this)
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declare void @_ZN2C6D0Ev(ptr %this)
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declare void @_ZN3C10D0Ev(ptr %this)
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