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llvm-project/llvm/test/Transforms/GVN/non-integral-pointers.ll
Valentin Churavy 700cf7dcc9 [VNCoercion] Disallow coercion between different ni addrspaces 
I'm not sure if it would be legal by the IR reference to introduce
an addrspacecast here, since the IR reference is a bit vague on
the exact semantics, but at least for our usage of it (and I
suspect for many other's usage) it is not. For us, addrspacecasts
between non-integral address spaces carry frontend information that the
optimizer cannot deduce afterwards in a generic way (though we
have frontend specific passes in our pipline that do propagate
these). In any case, I'm sure nobody is using it this way at
the moment, since it would have introduced inttoptrs, which
are definitely illegal.

Fixes PR38375

Co-authored-by: Keno Fischer <keno@alumni.harvard.edu>

Reviewed By: reames

Differential Revision: https://reviews.llvm.org/D50010
2020-12-07 20:19:48 -05:00

450 lines
22 KiB
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -gvn -S < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128-ni:4:5"
target triple = "x86_64-unknown-linux-gnu"
define void @f0(i1 %alwaysFalse, i64 %val, i64* %loc) {
; CHECK-LABEL: @f0(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i64 [[VAL:%.*]], i64* [[LOC:%.*]], align 8
; CHECK-NEXT: br i1 [[ALWAYSFALSE:%.*]], label [[NEVERTAKEN:%.*]], label [[ALWAYSTAKEN:%.*]]
; CHECK: neverTaken:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i64* [[LOC]] to i8 addrspace(4)**
; CHECK-NEXT: [[PTR:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)** [[LOC_BC]], align 8
; CHECK-NEXT: store i8 5, i8 addrspace(4)* [[PTR]], align 1
; CHECK-NEXT: ret void
; CHECK: alwaysTaken:
; CHECK-NEXT: ret void
;
entry:
store i64 %val, i64* %loc
br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken
neverTaken:
%loc.bc = bitcast i64* %loc to i8 addrspace(4)**
%ptr = load i8 addrspace(4)*, i8 addrspace(4)** %loc.bc
store i8 5, i8 addrspace(4)* %ptr
ret void
alwaysTaken:
ret void
}
define i64 @f1(i1 %alwaysFalse, i8 addrspace(4)* %val, i8 addrspace(4)** %loc) {
; CHECK-LABEL: @f1(
; CHECK-NEXT: entry:
; CHECK-NEXT: store i8 addrspace(4)* [[VAL:%.*]], i8 addrspace(4)** [[LOC:%.*]], align 8
; CHECK-NEXT: br i1 [[ALWAYSFALSE:%.*]], label [[NEVERTAKEN:%.*]], label [[ALWAYSTAKEN:%.*]]
; CHECK: neverTaken:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)** [[LOC]] to i64*
; CHECK-NEXT: [[INT:%.*]] = load i64, i64* [[LOC_BC]], align 8
; CHECK-NEXT: ret i64 [[INT]]
; CHECK: alwaysTaken:
; CHECK-NEXT: ret i64 42
;
entry:
store i8 addrspace(4)* %val, i8 addrspace(4)** %loc
br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken
neverTaken:
%loc.bc = bitcast i8 addrspace(4)** %loc to i64*
%int = load i64, i64* %loc.bc
ret i64 %int
alwaysTaken:
ret i64 42
}
;; Note: For terseness, we stop using the %alwaysfalse trick for the
;; tests below and just exercise the bits of forwarding logic directly.
declare void @llvm.memset.p4i8.i64(i8 addrspace(4)* nocapture, i8, i64, i1) nounwind
; Can't forward as the load might be dead. (Pretend we wrote out the alwaysfalse idiom above.)
define i8 addrspace(4)* @neg_forward_memset(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memset(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memset.p4i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8 7, i64 8, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
call void @llvm.memset.p4i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8 7, i64 8, i1 false)
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
define <1 x i8 addrspace(4)*> @neg_forward_memset_vload(<1 x i8 addrspace(4)*> addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memset_vload(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast <1 x i8 addrspace(4)*> addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memset.p4i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8 7, i64 8, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load <1 x i8 addrspace(4)*>, <1 x i8 addrspace(4)*> addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret <1 x i8 addrspace(4)*> [[REF]]
;
entry:
%loc.bc = bitcast <1 x i8 addrspace(4)*> addrspace(4)* %loc to i8 addrspace(4)*
call void @llvm.memset.p4i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8 7, i64 8, i1 false)
%ref = load <1 x i8 addrspace(4)*>, <1 x i8 addrspace(4)*> addrspace(4)* %loc
ret <1 x i8 addrspace(4)*> %ref
}
; Can forward since we can do so w/o breaking types
define i8 addrspace(4)* @forward_memset_zero(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @forward_memset_zero(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memset.p4i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8 0, i64 8, i1 false)
; CHECK-NEXT: ret i8 addrspace(4)* null
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
call void @llvm.memset.p4i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8 0, i64 8, i1 false)
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
; Can't forward as the load might be dead. (Pretend we wrote out the alwaysfalse idiom above.)
define i8 addrspace(4)* @neg_forward_store(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_store(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i64 addrspace(4)*
; CHECK-NEXT: store i64 5, i64 addrspace(4)* [[LOC_BC]], align 8
; CHECK-NEXT: [[REF:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i64 addrspace(4)*
store i64 5, i64 addrspace(4)* %loc.bc
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
define <1 x i8 addrspace(4)*> @neg_forward_store_vload(<1 x i8 addrspace(4)*> addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_store_vload(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast <1 x i8 addrspace(4)*> addrspace(4)* [[LOC:%.*]] to i64 addrspace(4)*
; CHECK-NEXT: store i64 5, i64 addrspace(4)* [[LOC_BC]], align 8
; CHECK-NEXT: [[REF:%.*]] = load <1 x i8 addrspace(4)*>, <1 x i8 addrspace(4)*> addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret <1 x i8 addrspace(4)*> [[REF]]
;
entry:
%loc.bc = bitcast <1 x i8 addrspace(4)*> addrspace(4)* %loc to i64 addrspace(4)*
store i64 5, i64 addrspace(4)* %loc.bc
%ref = load <1 x i8 addrspace(4)*>, <1 x i8 addrspace(4)*> addrspace(4)* %loc
ret <1 x i8 addrspace(4)*> %ref
}
; Nulls have known bit patterns, so we can forward
define i8 addrspace(4)* @forward_store_zero(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @forward_store_zero(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i64 addrspace(4)*
; CHECK-NEXT: store i64 0, i64 addrspace(4)* [[LOC_BC]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* null
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i64 addrspace(4)*
store i64 0, i64 addrspace(4)* %loc.bc
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
; Nulls have known bit patterns, so we can forward
define i8 addrspace(4)* @forward_store_zero2(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @forward_store_zero2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to <2 x i32> addrspace(4)*
; CHECK-NEXT: store <2 x i32> zeroinitializer, <2 x i32> addrspace(4)* [[LOC_BC]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* null
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to <2 x i32> addrspace(4)*
store <2 x i32> zeroinitializer, <2 x i32> addrspace(4)* %loc.bc
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
@NonZeroConstant = constant <4 x i64> <i64 3, i64 3, i64 3, i64 3>
@NonZeroConstant2 = constant <4 x i64 addrspace(4)*> <
i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* null, i32 3),
i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* null, i32 3),
i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* null, i32 3),
i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* null, i32 3)>
@ZeroConstant = constant <4 x i64> zeroinitializer
; Can't forward as the load might be dead. (Pretend we wrote out the alwaysfalse idiom above.)
define i8 addrspace(4)* @neg_forward_memcopy(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memcopy(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64>* @NonZeroConstant to i8*), i64 8, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64>* @NonZeroConstant to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 8, i1 false)
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
define i64 addrspace(4)* @neg_forward_memcopy2(i64 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memcopy2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i64 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64>* @NonZeroConstant to i8*), i64 8, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load i64 addrspace(4)*, i64 addrspace(4)* addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret i64 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i64 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64>* @NonZeroConstant to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 8, i1 false)
%ref = load i64 addrspace(4)*, i64 addrspace(4)* addrspace(4)* %loc
ret i64 addrspace(4)* %ref
}
; TODO: missed optimization
define i8 addrspace(4)* @forward_memcopy(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @forward_memcopy(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*), i64 8, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 8, i1 false)
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
define i64 addrspace(4)* @forward_memcopy2(i64 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @forward_memcopy2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i64 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*), i64 8, i1 false)
; CHECK-NEXT: ret i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* null, i32 3)
;
entry:
%loc.bc = bitcast i64 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 8, i1 false)
%ref = load i64 addrspace(4)*, i64 addrspace(4)* addrspace(4)* %loc
ret i64 addrspace(4)* %ref
}
define <1 x i8 addrspace(4)*> @neg_forward_memcpy_vload(<1 x i8 addrspace(4)*> addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memcpy_vload(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast <1 x i8 addrspace(4)*> addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64>* @NonZeroConstant to i8*), i64 8, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load <1 x i8 addrspace(4)*>, <1 x i8 addrspace(4)*> addrspace(4)* [[LOC]], align 8
; CHECK-NEXT: ret <1 x i8 addrspace(4)*> [[REF]]
;
entry:
%loc.bc = bitcast <1 x i8 addrspace(4)*> addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64>* @NonZeroConstant to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 8, i1 false)
%ref = load <1 x i8 addrspace(4)*>, <1 x i8 addrspace(4)*> addrspace(4)* %loc
ret <1 x i8 addrspace(4)*> %ref
}
define <4 x i64 addrspace(4)*> @neg_forward_memcpy_vload2(<4 x i64 addrspace(4)*> addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memcpy_vload2(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast <4 x i64 addrspace(4)*> addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64>* @NonZeroConstant to i8*), i64 32, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*> addrspace(4)* [[LOC]], align 32
; CHECK-NEXT: ret <4 x i64 addrspace(4)*> [[REF]]
;
entry:
%loc.bc = bitcast <4 x i64 addrspace(4)*> addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64>* @NonZeroConstant to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 32, i1 false)
%ref = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*> addrspace(4)* %loc
ret <4 x i64 addrspace(4)*> %ref
}
define <4 x i64> @neg_forward_memcpy_vload3(<4 x i64> addrspace(4)* %loc) {
; CHECK-LABEL: @neg_forward_memcpy_vload3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast <4 x i64> addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*), i64 32, i1 false)
; CHECK-NEXT: [[REF:%.*]] = load <4 x i64>, <4 x i64> addrspace(4)* [[LOC]], align 32
; CHECK-NEXT: ret <4 x i64> [[REF]]
;
entry:
%loc.bc = bitcast <4 x i64> addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 32, i1 false)
%ref = load <4 x i64>, <4 x i64> addrspace(4)* %loc
ret <4 x i64> %ref
}
define <1 x i64 addrspace(4)*> @forward_memcpy_vload3(<4 x i64 addrspace(4)*> addrspace(4)* %loc) {
; CHECK-LABEL: @forward_memcpy_vload3(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast <4 x i64 addrspace(4)*> addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*), i64 32, i1 false)
; CHECK-NEXT: ret <1 x i64 addrspace(4)*> <i64 addrspace(4)* getelementptr (i64, i64 addrspace(4)* null, i32 3)>
;
entry:
%loc.bc = bitcast <4 x i64 addrspace(4)*> addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64 addrspace(4)*>* @NonZeroConstant2 to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 32, i1 false)
%ref = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*> addrspace(4)* %loc
%val = extractelement <4 x i64 addrspace(4)*> %ref, i32 0
%ret = insertelement <1 x i64 addrspace(4)*> undef, i64 addrspace(4)* %val, i32 0
ret <1 x i64 addrspace(4)*> %ret
}
; Can forward since we can do so w/o breaking types
define i8 addrspace(4)* @forward_memcpy_zero(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @forward_memcpy_zero(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to i8 addrspace(4)*
; CHECK-NEXT: call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 [[LOC_BC]], i8* bitcast (<4 x i64>* @ZeroConstant to i8*), i64 8, i1 false)
; CHECK-NEXT: ret i8 addrspace(4)* null
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to i8 addrspace(4)*
%src.bc = bitcast <4 x i64>* @ZeroConstant to i8*
call void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* align 4 %loc.bc, i8* %src.bc, i64 8, i1 false)
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc
ret i8 addrspace(4)* %ref
}
declare void @llvm.memcpy.p4i8.p0i8.i64(i8 addrspace(4)* nocapture, i8* nocapture, i64, i1) nounwind
; Same as the neg_forward_store cases, but for non defs.
; (Pretend we wrote out the alwaysfalse idiom above.)
define i8 addrspace(4)* @neg_store_clobber(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @neg_store_clobber(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to <2 x i64> addrspace(4)*
; CHECK-NEXT: store <2 x i64> <i64 4, i64 4>, <2 x i64> addrspace(4)* [[LOC_BC]], align 16
; CHECK-NEXT: [[LOC_OFF:%.*]] = getelementptr i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], i64 1
; CHECK-NEXT: [[REF:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC_OFF]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to <2 x i64> addrspace(4)*
store <2 x i64> <i64 4, i64 4>, <2 x i64> addrspace(4)* %loc.bc
%loc.off = getelementptr i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc, i64 1
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc.off
ret i8 addrspace(4)* %ref
}
declare void @use(<2 x i64>) inaccessiblememonly
; Same as the neg_forward_store cases, but for non defs.
; (Pretend we wrote out the alwaysfalse idiom above.)
define i8 addrspace(4)* @neg_load_clobber(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @neg_load_clobber(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to <2 x i64> addrspace(4)*
; CHECK-NEXT: [[V:%.*]] = load <2 x i64>, <2 x i64> addrspace(4)* [[LOC_BC]], align 16
; CHECK-NEXT: call void @use(<2 x i64> [[V]])
; CHECK-NEXT: [[LOC_OFF:%.*]] = getelementptr i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], i64 1
; CHECK-NEXT: [[REF:%.*]] = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC_OFF]], align 8
; CHECK-NEXT: ret i8 addrspace(4)* [[REF]]
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to <2 x i64> addrspace(4)*
%v = load <2 x i64>, <2 x i64> addrspace(4)* %loc.bc
call void @use(<2 x i64> %v)
%loc.off = getelementptr i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc, i64 1
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc.off
ret i8 addrspace(4)* %ref
}
define i8 addrspace(4)* @store_clobber_zero(i8 addrspace(4)* addrspace(4)* %loc) {
; CHECK-LABEL: @store_clobber_zero(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[LOC_BC:%.*]] = bitcast i8 addrspace(4)* addrspace(4)* [[LOC:%.*]] to <2 x i64> addrspace(4)*
; CHECK-NEXT: store <2 x i64> zeroinitializer, <2 x i64> addrspace(4)* [[LOC_BC]], align 16
; CHECK-NEXT: [[LOC_OFF:%.*]] = getelementptr i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* [[LOC]], i64 1
; CHECK-NEXT: ret i8 addrspace(4)* null
;
entry:
%loc.bc = bitcast i8 addrspace(4)* addrspace(4)* %loc to <2 x i64> addrspace(4)*
store <2 x i64> zeroinitializer, <2 x i64> addrspace(4)* %loc.bc
%loc.off = getelementptr i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc, i64 1
%ref = load i8 addrspace(4)*, i8 addrspace(4)* addrspace(4)* %loc.off
ret i8 addrspace(4)* %ref
}
define void @smaller_vector(i8* %p) {
; CHECK-LABEL: @smaller_vector(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = bitcast i8* [[P:%.*]] to <4 x i64 addrspace(4)*>*
; CHECK-NEXT: [[B:%.*]] = bitcast i8* [[P]] to <2 x i64 addrspace(4)*>*
; CHECK-NEXT: [[V4:%.*]] = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*>* [[A]], align 32
; CHECK-NEXT: [[V2:%.*]] = load <2 x i64 addrspace(4)*>, <2 x i64 addrspace(4)*>* [[B]], align 32
; CHECK-NEXT: call void @use.v2(<2 x i64 addrspace(4)*> [[V2]])
; CHECK-NEXT: call void @use.v4(<4 x i64 addrspace(4)*> [[V4]])
; CHECK-NEXT: ret void
;
entry:
%a = bitcast i8* %p to <4 x i64 addrspace(4)*>*
%b = bitcast i8* %p to <2 x i64 addrspace(4)*>*
%v4 = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*>* %a, align 32
%v2 = load <2 x i64 addrspace(4)*>, <2 x i64 addrspace(4)*>* %b, align 32
call void @use.v2(<2 x i64 addrspace(4)*> %v2)
call void @use.v4(<4 x i64 addrspace(4)*> %v4)
ret void
}
define i64 addrspace(4)* @vector_extract(i8* %p) {
; CHECK-LABEL: @vector_extract(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[A:%.*]] = bitcast i8* [[P:%.*]] to <4 x i64 addrspace(4)*>*
; CHECK-NEXT: [[B:%.*]] = bitcast i8* [[P]] to i64 addrspace(4)**
; CHECK-NEXT: [[V4:%.*]] = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*>* [[A]], align 32
; CHECK-NEXT: [[RES:%.*]] = load i64 addrspace(4)*, i64 addrspace(4)** [[B]], align 32
; CHECK-NEXT: call void @use.v4(<4 x i64 addrspace(4)*> [[V4]])
; CHECK-NEXT: ret i64 addrspace(4)* [[RES]]
;
entry:
%a = bitcast i8* %p to <4 x i64 addrspace(4)*>*
%b = bitcast i8* %p to i64 addrspace(4)**
%v4 = load <4 x i64 addrspace(4)*>, <4 x i64 addrspace(4)*>* %a, align 32
%res = load i64 addrspace(4)*, i64 addrspace(4)** %b, align 32
call void @use.v4(<4 x i64 addrspace(4)*> %v4)
ret i64 addrspace(4)* %res
}
declare void @use.v2(<2 x i64 addrspace(4)*>)
declare void @use.v4(<4 x i64 addrspace(4)*>)
define i8 addrspace(5)* @multini(i1 %alwaysFalse, i8 addrspace(4)* %val, i8 addrspace(4)** %loc) {
; CHECK-LABEL: @multini(
; CHECK-NOT: inttoptr
; CHECK-NOT: ptrtoint
; CHECK-NOT: addrspacecast
entry:
store i8 addrspace(4)* %val, i8 addrspace(4)** %loc
br i1 %alwaysFalse, label %neverTaken, label %alwaysTaken
neverTaken:
%loc.bc = bitcast i8 addrspace(4)** %loc to i8 addrspace(5)**
%differentas = load i8 addrspace(5)*, i8 addrspace(5)** %loc.bc
ret i8 addrspace(5)* %differentas
alwaysTaken:
ret i8 addrspace(5)* null
}
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