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clang-p2996/llvm/test/Transforms/LoopVectorize/X86/pr23997.ll
Alexander Ivchenko 5c54742da4 [X86][CET] Changing -fcf-protection behavior to comply with gcc (LLVM part) 
This patch aims to match the changes introduced in gcc by
https://gcc.gnu.org/ml/gcc-cvs/2018-04/msg00534.html. The
IBT feature definition is removed, with the IBT instructions
being freely available on all X86 targets. The shadow stack
instructions are also being made freely available, and the
use of all these CET instructions is controlled by the module
flags derived from the -fcf-protection clang option. The hasSHSTK
option remains since clang uses it to determine availability of
shadow stack instruction intrinsics, but it is no longer directly used.

Comes with a clang patch (D46881).

Patch by mike.dvoretsky

Differential Revision: https://reviews.llvm.org/D46882

llvm-svn: 332705
2018-05-18 11:58:25 +00:00

110 lines
8.4 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -loop-vectorize -dce -instcombine < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:1"
target triple = "x86_64-unknown-linux-gnu"
; Ensure that the 'inbounds' is preserved on the GEPs that feed the load and store in the loop.
define void @foo(i8 addrspace(1)* align 8 dereferenceable_or_null(16), i8 addrspace(1)* align 8 dereferenceable_or_null(8), i64) #0 {
; CHECK-LABEL: @foo(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[PREHEADER:%.*]]
; CHECK: preheader:
; CHECK-NEXT: [[DOT10:%.*]] = getelementptr inbounds i8, i8 addrspace(1)* [[TMP0:%.*]], i64 16
; CHECK-NEXT: [[DOT11:%.*]] = bitcast i8 addrspace(1)* [[DOT10]] to i8 addrspace(1)* addrspace(1)*
; CHECK-NEXT: [[DOT12:%.*]] = getelementptr inbounds i8, i8 addrspace(1)* [[TMP1:%.*]], i64 16
; CHECK-NEXT: [[DOT13:%.*]] = bitcast i8 addrspace(1)* [[DOT12]] to i8 addrspace(1)* addrspace(1)*
; CHECK-NEXT: [[TMP3:%.*]] = icmp ugt i64 [[TMP2:%.*]], 1
; CHECK-NEXT: [[UMAX:%.*]] = select i1 [[TMP3]], i64 [[TMP2]], i64 1
; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[UMAX]], 16
; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_MEMCHECK:%.*]]
; CHECK: vector.memcheck:
; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt i64 [[TMP2]], 1
; CHECK-NEXT: [[UMAX1:%.*]] = select i1 [[TMP4]], i64 [[TMP2]], i64 1
; CHECK-NEXT: [[TMP5:%.*]] = shl i64 [[UMAX1]], 3
; CHECK-NEXT: [[TMP6:%.*]] = add i64 [[TMP5]], 8
; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i8, i8 addrspace(1)* [[TMP0]], i64 [[TMP6]]
; CHECK-NEXT: [[SCEVGEP2:%.*]] = getelementptr i8, i8 addrspace(1)* [[TMP1]], i64 [[TMP6]]
; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult i8 addrspace(1)* [[DOT10]], [[SCEVGEP2]]
; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult i8 addrspace(1)* [[DOT12]], [[SCEVGEP]]
; CHECK-NEXT: [[MEMCHECK_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]]
; CHECK-NEXT: br i1 [[MEMCHECK_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]]
; CHECK: vector.ph:
; CHECK-NEXT: [[N_VEC:%.*]] = and i64 [[UMAX]], -16
; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
; CHECK: vector.body:
; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[DOT13]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP8:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP7]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <4 x i8 addrspace(1)*>, <4 x i8 addrspace(1)*> addrspace(1)* [[TMP8]], align 8, !alias.scope !0
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[TMP7]], i64 4
; CHECK-NEXT: [[TMP10:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP9]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: [[WIDE_LOAD6:%.*]] = load <4 x i8 addrspace(1)*>, <4 x i8 addrspace(1)*> addrspace(1)* [[TMP10]], align 8, !alias.scope !0
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[TMP7]], i64 8
; CHECK-NEXT: [[TMP12:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP11]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: [[WIDE_LOAD7:%.*]] = load <4 x i8 addrspace(1)*>, <4 x i8 addrspace(1)*> addrspace(1)* [[TMP12]], align 8, !alias.scope !0
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[TMP7]], i64 12
; CHECK-NEXT: [[TMP14:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP13]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: [[WIDE_LOAD8:%.*]] = load <4 x i8 addrspace(1)*>, <4 x i8 addrspace(1)*> addrspace(1)* [[TMP14]], align 8, !alias.scope !0
; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[DOT11]], i64 [[INDEX]]
; CHECK-NEXT: [[TMP16:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP15]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: store <4 x i8 addrspace(1)*> [[WIDE_LOAD]], <4 x i8 addrspace(1)*> addrspace(1)* [[TMP16]], align 8, !alias.scope !3, !noalias !0
; CHECK-NEXT: [[TMP17:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[TMP15]], i64 4
; CHECK-NEXT: [[TMP18:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP17]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: store <4 x i8 addrspace(1)*> [[WIDE_LOAD6]], <4 x i8 addrspace(1)*> addrspace(1)* [[TMP18]], align 8, !alias.scope !3, !noalias !0
; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[TMP15]], i64 8
; CHECK-NEXT: [[TMP20:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP19]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: store <4 x i8 addrspace(1)*> [[WIDE_LOAD7]], <4 x i8 addrspace(1)*> addrspace(1)* [[TMP20]], align 8, !alias.scope !3, !noalias !0
; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[TMP15]], i64 12
; CHECK-NEXT: [[TMP22:%.*]] = bitcast i8 addrspace(1)* addrspace(1)* [[TMP21]] to <4 x i8 addrspace(1)*> addrspace(1)*
; CHECK-NEXT: store <4 x i8 addrspace(1)*> [[WIDE_LOAD8]], <4 x i8 addrspace(1)*> addrspace(1)* [[TMP22]], align 8, !alias.scope !3, !noalias !0
; CHECK-NEXT: [[INDEX_NEXT]] = add i64 [[INDEX]], 16
; CHECK-NEXT: [[TMP23:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
; CHECK-NEXT: br i1 [[TMP23]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !5
; CHECK: middle.block:
; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 [[UMAX]], [[N_VEC]]
; CHECK-NEXT: br i1 [[CMP_N]], label [[LOOPEXIT:%.*]], label [[SCALAR_PH]]
; CHECK: scalar.ph:
; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[PREHEADER]] ], [ 0, [[VECTOR_MEMCHECK]] ]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[INDVARS_IV3:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INDVARS_IV_NEXT4:%.*]], [[LOOP]] ]
; CHECK-NEXT: [[DOT18:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[DOT13]], i64 [[INDVARS_IV3]]
; CHECK-NEXT: [[V:%.*]] = load i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[DOT18]], align 8
; CHECK-NEXT: [[DOT20:%.*]] = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* [[DOT11]], i64 [[INDVARS_IV3]]
; CHECK-NEXT: store i8 addrspace(1)* [[V]], i8 addrspace(1)* addrspace(1)* [[DOT20]], align 8
; CHECK-NEXT: [[INDVARS_IV_NEXT4]] = add nuw nsw i64 [[INDVARS_IV3]], 1
; CHECK-NEXT: [[DOT21:%.*]] = icmp ult i64 [[INDVARS_IV_NEXT4]], [[TMP2]]
; CHECK-NEXT: br i1 [[DOT21]], label [[LOOP]], label [[LOOPEXIT]], !llvm.loop !7
; CHECK: loopexit:
; CHECK-NEXT: ret void
;
entry:
br label %preheader
preheader: ; preds = %4
%.10 = getelementptr inbounds i8, i8 addrspace(1)* %0, i64 16
%.11 = bitcast i8 addrspace(1)* %.10 to i8 addrspace(1)* addrspace(1)*
%.12 = getelementptr inbounds i8, i8 addrspace(1)* %1, i64 16
%.13 = bitcast i8 addrspace(1)* %.12 to i8 addrspace(1)* addrspace(1)*
br label %loop
loop:
%indvars.iv3 = phi i64 [ 0, %preheader ], [ %indvars.iv.next4, %loop ]
%.18 = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* %.13, i64 %indvars.iv3
%v = load i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* %.18, align 8
%.20 = getelementptr inbounds i8 addrspace(1)*, i8 addrspace(1)* addrspace(1)* %.11, i64 %indvars.iv3
store i8 addrspace(1)* %v, i8 addrspace(1)* addrspace(1)* %.20, align 8
%indvars.iv.next4 = add nuw nsw i64 %indvars.iv3, 1
%.21 = icmp ult i64 %indvars.iv.next4, %2
br i1 %.21, label %loop, label %loopexit
loopexit:
ret void
}
attributes #0 = { uwtable "target-cpu"="skylake" "target-features"="+sse2,+cx16,+sahf,-tbm,-avx512ifma,-sha,-gfni,-fma4,-vpclmulqdq,+prfchw,+bmi2,-cldemote,+fsgsbase,+xsavec,+popcnt,+aes,-avx512bitalg,+xsaves,-avx512er,-avx512vnni,-avx512vpopcntdq,-clwb,-avx512f,-clzero,-pku,+mmx,-lwp,-rdpid,-xop,+rdseed,-waitpkg,-sse4a,-avx512bw,+clflushopt,+xsave,-avx512vbmi2,-avx512vl,-avx512cd,+avx,-vaes,+rtm,+fma,+bmi,+rdrnd,-mwaitx,+sse4.1,+sse4.2,+avx2,-wbnoinvd,+sse,+lzcnt,+pclmul,-prefetchwt1,+f16c,+ssse3,+sgx,-shstk,+cmov,-avx512vbmi,+movbe,+xsaveopt,-avx512dq,+adx,-avx512pf,+sse3" }
!0 = !{i32 0, i32 2147483646}
!1 = !{}
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