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llvm-project/llvm/test/Transforms/SLPVectorizer/X86/crash_mandeltext.ll
Juneyoung Lee 4a8e6ed2f7 [SLP,LV] Use poison constant vector for shufflevector/initial insertelement 
This patch makes SLP and LV emit operations with initial vectors set to poison constant instead of undef.
This is a part of efforts for using poison vector instead of undef to represent "doesn't care" vector.
The goal is to make nice shufflevector optimizations valid that is currently incorrect due to the tricky interaction between undef and poison (see https://bugs.llvm.org/show_bug.cgi?id=44185 ).

Reviewed By: fhahn

Differential Revision: https://reviews.llvm.org/D94061
2021-01-06 11:22:50 +09:00

181 lines
7.8 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basic-aa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.8.0"
define void @main() {
; CHECK-LABEL: @main(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: br label [[FOR_COND4_PREHEADER:%.*]]
; CHECK: for.cond4.preheader:
; CHECK-NEXT: br label [[FOR_BODY6:%.*]]
; CHECK: for.body6:
; CHECK-NEXT: br label [[FOR_BODY12:%.*]]
; CHECK: for.body12:
; CHECK-NEXT: [[FZIMG_069:%.*]] = phi double [ undef, [[FOR_BODY6]] ], [ [[ADD19:%.*]], [[IF_END:%.*]] ]
; CHECK-NEXT: [[FZREAL_068:%.*]] = phi double [ undef, [[FOR_BODY6]] ], [ [[ADD20:%.*]], [[IF_END]] ]
; CHECK-NEXT: [[MUL13:%.*]] = fmul double [[FZREAL_068]], [[FZREAL_068]]
; CHECK-NEXT: [[MUL14:%.*]] = fmul double [[FZIMG_069]], [[FZIMG_069]]
; CHECK-NEXT: [[ADD15:%.*]] = fadd double [[MUL13]], [[MUL14]]
; CHECK-NEXT: [[CMP16:%.*]] = fcmp ogt double [[ADD15]], 4.000000e+00
; CHECK-NEXT: br i1 [[CMP16]], label [[FOR_INC21:%.*]], label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[MUL18:%.*]] = fmul double undef, [[FZIMG_069]]
; CHECK-NEXT: [[ADD19]] = fadd double undef, [[MUL18]]
; CHECK-NEXT: [[SUB:%.*]] = fsub double [[MUL13]], [[MUL14]]
; CHECK-NEXT: [[ADD20]] = fadd double undef, [[SUB]]
; CHECK-NEXT: br i1 undef, label [[FOR_BODY12]], label [[FOR_INC21]]
; CHECK: for.inc21:
; CHECK-NEXT: br i1 undef, label [[FOR_END23:%.*]], label [[FOR_BODY6]]
; CHECK: for.end23:
; CHECK-NEXT: br i1 undef, label [[IF_THEN25:%.*]], label [[IF_THEN26:%.*]]
; CHECK: if.then25:
; CHECK-NEXT: br i1 undef, label [[FOR_END44:%.*]], label [[FOR_COND4_PREHEADER]]
; CHECK: if.then26:
; CHECK-NEXT: unreachable
; CHECK: for.end44:
; CHECK-NEXT: br i1 undef, label [[FOR_END48:%.*]], label [[FOR_BODY]]
; CHECK: for.end48:
; CHECK-NEXT: ret void
;
entry:
br label %for.body
for.body: ; preds = %for.end44, %entry
br label %for.cond4.preheader
for.cond4.preheader: ; preds = %if.then25, %for.body
br label %for.body6
for.body6: ; preds = %for.inc21, %for.cond4.preheader
br label %for.body12
for.body12: ; preds = %if.end, %for.body6
%fZImg.069 = phi double [ undef, %for.body6 ], [ %add19, %if.end ]
%fZReal.068 = phi double [ undef, %for.body6 ], [ %add20, %if.end ]
%mul13 = fmul double %fZReal.068, %fZReal.068
%mul14 = fmul double %fZImg.069, %fZImg.069
%add15 = fadd double %mul13, %mul14
%cmp16 = fcmp ogt double %add15, 4.000000e+00
br i1 %cmp16, label %for.inc21, label %if.end
if.end: ; preds = %for.body12
%mul18 = fmul double undef, %fZImg.069
%add19 = fadd double undef, %mul18
%sub = fsub double %mul13, %mul14
%add20 = fadd double undef, %sub
br i1 undef, label %for.body12, label %for.inc21
for.inc21: ; preds = %if.end, %for.body12
br i1 undef, label %for.end23, label %for.body6
for.end23: ; preds = %for.inc21
br i1 undef, label %if.then25, label %if.then26
if.then25: ; preds = %for.end23
br i1 undef, label %for.end44, label %for.cond4.preheader
if.then26: ; preds = %for.end23
unreachable
for.end44: ; preds = %if.then25
br i1 undef, label %for.end48, label %for.body
for.end48: ; preds = %for.end44
ret void
}
%struct.hoge = type { double, double, double}
define void @zot(%struct.hoge* %arg) {
; CHECK-LABEL: @zot(
; CHECK-NEXT: bb:
; CHECK-NEXT: [[TMP:%.*]] = load double, double* undef, align 8
; CHECK-NEXT: [[TMP2:%.*]] = load double, double* undef, align 8
; CHECK-NEXT: [[TMP0:%.*]] = insertelement <2 x double> poison, double [[TMP2]], i32 0
; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x double> [[TMP0]], double [[TMP]], i32 1
; CHECK-NEXT: [[TMP2:%.*]] = fsub <2 x double> [[TMP1]], undef
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [[STRUCT_HOGE:%.*]], %struct.hoge* [[ARG:%.*]], i64 0, i32 1
; CHECK-NEXT: [[TMP3:%.*]] = fmul <2 x double> [[TMP2]], undef
; CHECK-NEXT: [[TMP4:%.*]] = fsub <2 x double> [[TMP3]], undef
; CHECK-NEXT: [[TMP5:%.*]] = bitcast double* [[TMP7]] to <2 x double>*
; CHECK-NEXT: store <2 x double> [[TMP4]], <2 x double>* [[TMP5]], align 8
; CHECK-NEXT: br i1 undef, label [[BB11:%.*]], label [[BB12:%.*]]
; CHECK: bb11:
; CHECK-NEXT: br label [[BB14:%.*]]
; CHECK: bb12:
; CHECK-NEXT: br label [[BB14]]
; CHECK: bb14:
; CHECK-NEXT: ret void
;
bb:
%tmp = load double, double* undef, align 8
%tmp1 = fsub double %tmp, undef
%tmp2 = load double, double* undef, align 8
%tmp3 = fsub double %tmp2, undef
%tmp4 = fmul double %tmp3, undef
%tmp5 = fmul double %tmp3, undef
%tmp6 = fsub double %tmp5, undef
%tmp7 = getelementptr inbounds %struct.hoge, %struct.hoge* %arg, i64 0, i32 1
store double %tmp6, double* %tmp7, align 8
%tmp8 = fmul double %tmp1, undef
%tmp9 = fsub double %tmp8, undef
%tmp10 = getelementptr inbounds %struct.hoge, %struct.hoge* %arg, i64 0, i32 2
store double %tmp9, double* %tmp10, align 8
br i1 undef, label %bb11, label %bb12
bb11: ; preds = %bb
br label %bb14
bb12: ; preds = %bb
%tmp13 = fmul double undef, %tmp2
br label %bb14
bb14: ; preds = %bb12, %bb11
ret void
}
%struct.rc4_state.0.24 = type { i32, i32, [256 x i32] }
define void @rc4_crypt(%struct.rc4_state.0.24* nocapture %s) {
; CHECK-LABEL: @rc4_crypt(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[X1:%.*]] = getelementptr inbounds [[STRUCT_RC4_STATE_0_24:%.*]], %struct.rc4_state.0.24* [[S:%.*]], i64 0, i32 0
; CHECK-NEXT: [[Y2:%.*]] = getelementptr inbounds [[STRUCT_RC4_STATE_0_24]], %struct.rc4_state.0.24* [[S]], i64 0, i32 1
; CHECK-NEXT: br i1 undef, label [[FOR_BODY:%.*]], label [[FOR_END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[CONV4:%.*]] = and i32 undef, 255
; CHECK-NEXT: [[CONV7:%.*]] = and i32 undef, 255
; CHECK-NEXT: br i1 undef, label [[FOR_END]], label [[FOR_BODY]]
; CHECK: for.end:
; CHECK-NEXT: [[X_0_LCSSA:%.*]] = phi i32 [ undef, [[ENTRY:%.*]] ], [ [[CONV4]], [[FOR_BODY]] ]
; CHECK-NEXT: [[Y_0_LCSSA:%.*]] = phi i32 [ undef, [[ENTRY]] ], [ [[CONV7]], [[FOR_BODY]] ]
; CHECK-NEXT: store i32 [[X_0_LCSSA]], i32* [[X1]], align 4
; CHECK-NEXT: store i32 [[Y_0_LCSSA]], i32* [[Y2]], align 4
; CHECK-NEXT: ret void
;
entry:
%x1 = getelementptr inbounds %struct.rc4_state.0.24, %struct.rc4_state.0.24* %s, i64 0, i32 0
%y2 = getelementptr inbounds %struct.rc4_state.0.24, %struct.rc4_state.0.24* %s, i64 0, i32 1
br i1 undef, label %for.body, label %for.end
for.body: ; preds = %for.body, %entry
%x.045 = phi i32 [ %conv4, %for.body ], [ undef, %entry ]
%conv4 = and i32 undef, 255
%conv7 = and i32 undef, 255
%idxprom842 = zext i32 %conv7 to i64
br i1 undef, label %for.end, label %for.body
for.end: ; preds = %for.body, %entry
%x.0.lcssa = phi i32 [ undef, %entry ], [ %conv4, %for.body ]
%y.0.lcssa = phi i32 [ undef, %entry ], [ %conv7, %for.body ]
store i32 %x.0.lcssa, i32* %x1, align 4
store i32 %y.0.lcssa, i32* %y2, align 4
ret void
}
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