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llvm-project/llvm/test/Transforms/MemCpyOpt/crash.ll
Luke Lau 79435de8a5
[ConstantFold] Support scalable constant splats in ConstantFoldCastInstruction (#133207) 
Previously only fixed vector splats were handled. This adds supports for
scalable vectors too by allowing ConstantExpr splats.

We need to add the extra V->getType()->isVectorTy() check because a
ConstantExpr might be a scalar to vector bitcast.

By allowing ConstantExprs this also allow fixed vector ConstantExprs to
be folded, which causes the diffs in
llvm/test/Analysis/ValueTracking/known-bits-from-operator-constexpr.ll
and llvm/test/Transforms/InstSimplify/ConstProp/cast-vector.ll. I can
remove them from this PR if reviewers would prefer.

Fixes #132922
2025-04-03 16:24:56 +01:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -passes=memcpyopt -verify-memoryssa | FileCheck %s
target datalayout = "e-p:32:32:32-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"
target triple = "armv7-eabi"
%struct.qw = type { [4 x float] }
%struct.bar = type { %struct.qw, %struct.qw, %struct.qw, %struct.qw, %struct.qw, float, float}
; PR4882
define void @test1(ptr %this) {
; CHECK-LABEL: @test1(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds [[STRUCT_BAR:%.*]], ptr [[THIS:%.*]], i32 0, i32 0, i32 0, i32 1
; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 0, i32 0, i32 2
; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 0, i32 0, i32 3
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 1, i32 0, i32 0
; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 1, i32 0, i32 1
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 1, i32 0, i32 2
; CHECK-NEXT: [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 1, i32 0, i32 3
; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 3, i32 0, i32 1
; CHECK-NEXT: [[TMP8:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 3, i32 0, i32 2
; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 3, i32 0, i32 3
; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 4, i32 0, i32 0
; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 4, i32 0, i32 1
; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 4, i32 0, i32 2
; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 4, i32 0, i32 3
; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds [[STRUCT_BAR]], ptr [[THIS]], i32 0, i32 5
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[THIS]], i8 0, i64 32, i1 false)
; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[TMP7]], i8 0, i64 32, i1 false)
; CHECK-NEXT: unreachable
;
entry:
store float 0.000000e+00, ptr %this, align 4
%0 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 0, i32 0, i32 1
store float 0.000000e+00, ptr %0, align 4
%1 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 0, i32 0, i32 2
store float 0.000000e+00, ptr %1, align 4
%2 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 0, i32 0, i32 3
store float 0.000000e+00, ptr %2, align 4
%3 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 1, i32 0, i32 0
store float 0.000000e+00, ptr %3, align 4
%4 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 1, i32 0, i32 1
store float 0.000000e+00, ptr %4, align 4
%5 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 1, i32 0, i32 2
store float 0.000000e+00, ptr %5, align 4
%6 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 1, i32 0, i32 3
store float 0.000000e+00, ptr %6, align 4
%7 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 3, i32 0, i32 1
store float 0.000000e+00, ptr %7, align 4
%8 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 3, i32 0, i32 2
store float 0.000000e+00, ptr %8, align 4
%9 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 3, i32 0, i32 3
store float 0.000000e+00, ptr %9, align 4
%10 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 4, i32 0, i32 0
store float 0.000000e+00, ptr %10, align 4
%11 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 4, i32 0, i32 1
store float 0.000000e+00, ptr %11, align 4
%12 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 4, i32 0, i32 2
store float 0.000000e+00, ptr %12, align 4
%13 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 4, i32 0, i32 3
store float 0.000000e+00, ptr %13, align 4
%14 = getelementptr inbounds %struct.bar, ptr %this, i32 0, i32 5
store float 0.000000e+00, ptr %14, align 4
unreachable
}
; PR8753
declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind
define void @test2(i32 %cmd) nounwind {
; CHECK-LABEL: @test2(
; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr null, ptr undef, i64 20, i1 false) #[[ATTR1:[0-9]+]]
; CHECK-NEXT: ret void
;
call void @llvm.memcpy.p0.p0.i64(ptr undef, ptr undef, i64 20, i1 false) nounwind
call void @llvm.memcpy.p0.p0.i64(ptr null, ptr undef, i64 20, i1 false) nounwind
ret void
}
; https://llvm.org/PR48075
@g = external global i16, align 1
define void @inttoptr_constexpr_crash(ptr %p) {
; CHECK-LABEL: @inttoptr_constexpr_crash(
; CHECK-NEXT: store <1 x ptr> <ptr inttoptr (i16 extractelement (<1 x i16> bitcast (<2 x i8> <i8 ptrtoint (ptr @g to i8), i8 ptrtoint (ptr @g to i8)> to <1 x i16>), i32 0) to ptr)>, ptr [[P:%.*]], align 1
; CHECK-NEXT: ret void
;
store <1 x ptr> inttoptr (<1 x i16> bitcast (<2 x i8> <i8 ptrtoint (ptr @g to i8), i8 ptrtoint (ptr @g to i8)> to <1 x i16>) to <1 x ptr>), ptr %p, align 1
ret void
}
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