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[InstCombine] auto-generate test checks; NFC

This commit is contained in:
Sanjay Patel 2020-08-10 08:27:19 -04:00
parent bc5d68dd8a
commit 3d5118b75c
2 changed files with 91 additions and 51 deletions
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6
llvm/include/llvm/IR/PatternMatch.h
View File

@ -1442,6 +1442,12 @@ inline CastClass_match<OpTy, Instruction::PtrToInt> m_PtrToInt(const OpTy &Op) {
return CastClass_match<OpTy, Instruction::PtrToInt>(Op);
}
/// Matches IntToPtr.
template <typename OpTy>
inline CastClass_match<OpTy, Instruction::IntToPtr> m_IntToPtr(const OpTy &Op) {
return CastClass_match<OpTy, Instruction::IntToPtr>(Op);
}
/// Matches Trunc.
template <typename OpTy>
inline CastClass_match<OpTy, Instruction::Trunc> m_Trunc(const OpTy &Op) {

122
llvm/test/Transforms/InstCombine/cast_ptr.ll
View File

@ -1,3 +1,4 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; Tests to make sure elimination of casts is working correctly
; RUN: opt < %s -instcombine -S | FileCheck %s
@ -8,51 +9,68 @@ target datalayout = "p:32:32-p1:32:32-p2:16:16"
; This shouldn't convert to getelementptr because the relationship
; between the arithmetic and the layout of allocated memory is
; entirely unknown.
; CHECK-LABEL: @test1(
; CHECK: ptrtoint
; CHECK: add
; CHECK: inttoptr
define i8* @test1(i8* %t) {
%tmpc = ptrtoint i8* %t to i32 ; <i32> [#uses=1]
%tmpa = add i32 %tmpc, 32 ; <i32> [#uses=1]
%tv = inttoptr i32 %tmpa to i8* ; <i8*> [#uses=1]
; CHECK-LABEL: @test1(
; CHECK-NEXT: [[TC:%.*]] = ptrtoint i8* [[T:%.*]] to i32
; CHECK-NEXT: [[TA:%.*]] = add i32 [[TC]], 32
; CHECK-NEXT: [[TV:%.*]] = inttoptr i32 [[TA]] to i8*
; CHECK-NEXT: ret i8* [[TV]]
;
%tc = ptrtoint i8* %t to i32
%ta = add i32 %tc, 32
%tv = inttoptr i32 %ta to i8*
ret i8* %tv
}
; These casts should be folded away.
; CHECK-LABEL: @test2(
; CHECK: icmp eq i8* %a, %b
define i1 @test2(i8* %a, i8* %b) {
%tmpa = ptrtoint i8* %a to i32 ; <i32> [#uses=1]
%tmpb = ptrtoint i8* %b to i32 ; <i32> [#uses=1]
%r = icmp eq i32 %tmpa, %tmpb ; <i1> [#uses=1]
; CHECK-LABEL: @test2(
; CHECK-NEXT: [[R:%.*]] = icmp eq i8* [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%ta = ptrtoint i8* %a to i32
%tb = ptrtoint i8* %b to i32
%r = icmp eq i32 %ta, %tb
ret i1 %r
}
; These casts should be folded away.
; CHECK-LABEL: @test2_as2_same_int(
; CHECK: icmp eq i8 addrspace(2)* %a, %b
define i1 @test2_as2_same_int(i8 addrspace(2)* %a, i8 addrspace(2)* %b) {
%tmpa = ptrtoint i8 addrspace(2)* %a to i16
%tmpb = ptrtoint i8 addrspace(2)* %b to i16
%r = icmp eq i16 %tmpa, %tmpb
; CHECK-LABEL: @test2_as2_same_int(
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 addrspace(2)* [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%ta = ptrtoint i8 addrspace(2)* %a to i16
%tb = ptrtoint i8 addrspace(2)* %b to i16
%r = icmp eq i16 %ta, %tb
ret i1 %r
}
; These casts should be folded away.
; CHECK-LABEL: @test2_as2_larger(
; CHECK: icmp eq i8 addrspace(2)* %a, %b
define i1 @test2_as2_larger(i8 addrspace(2)* %a, i8 addrspace(2)* %b) {
%tmpa = ptrtoint i8 addrspace(2)* %a to i32
%tmpb = ptrtoint i8 addrspace(2)* %b to i32
%r = icmp eq i32 %tmpa, %tmpb
; CHECK-LABEL: @test2_as2_larger(
; CHECK-NEXT: [[R:%.*]] = icmp eq i8 addrspace(2)* [[A:%.*]], [[B:%.*]]
; CHECK-NEXT: ret i1 [[R]]
;
%ta = ptrtoint i8 addrspace(2)* %a to i32
%tb = ptrtoint i8 addrspace(2)* %b to i32
%r = icmp eq i32 %ta, %tb
ret i1 %r
}
; These casts should not be folded away.
; CHECK-LABEL: @test2_diff_as
; CHECK: icmp sge i32 %i0, %i1
define i1 @test2_diff_as(i8* %p, i8 addrspace(1)* %q) {
; CHECK-LABEL: @test2_diff_as(
; CHECK-NEXT: [[I0:%.*]] = ptrtoint i8* [[P:%.*]] to i32
; CHECK-NEXT: [[I1:%.*]] = ptrtoint i8 addrspace(1)* [[Q:%.*]] to i32
; CHECK-NEXT: [[R0:%.*]] = icmp sge i32 [[I0]], [[I1]]
; CHECK-NEXT: ret i1 [[R0]]
;
%i0 = ptrtoint i8* %p to i32
%i1 = ptrtoint i8 addrspace(1)* %q to i32
%r0 = icmp sge i32 %i0, %i1
@ -60,9 +78,13 @@ define i1 @test2_diff_as(i8* %p, i8 addrspace(1)* %q) {
}
; These casts should not be folded away.
; CHECK-LABEL: @test2_diff_as_global
; CHECK: icmp sge i32 %i1
define i1 @test2_diff_as_global(i8 addrspace(1)* %q) {
; CHECK-LABEL: @test2_diff_as_global(
; CHECK-NEXT: [[I1:%.*]] = ptrtoint i8 addrspace(1)* [[Q:%.*]] to i32
; CHECK-NEXT: [[R0:%.*]] = icmp sge i32 [[I1]], ptrtoint (i8* @global to i32)
; CHECK-NEXT: ret i1 [[R0]]
;
%i0 = ptrtoint i8* @global to i32
%i1 = ptrtoint i8 addrspace(1)* %q to i32
%r0 = icmp sge i32 %i1, %i0
@ -70,27 +92,32 @@ define i1 @test2_diff_as_global(i8 addrspace(1)* %q) {
}
; These casts should also be folded away.
; CHECK-LABEL: @test3(
; CHECK: icmp eq i8* %a, @global
define i1 @test3(i8* %a) {
%tmpa = ptrtoint i8* %a to i32
%r = icmp eq i32 %tmpa, ptrtoint (i8* @global to i32)
; CHECK-LABEL: @test3(
; CHECK-NEXT: [[R:%.*]] = icmp eq i8* [[A:%.*]], @global
; CHECK-NEXT: ret i1 [[R]]
;
%ta = ptrtoint i8* %a to i32
%r = icmp eq i32 %ta, ptrtoint (i8* @global to i32)
ret i1 %r
}
define i1 @test4(i32 %A) {
; CHECK-LABEL: @test4(
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[A:%.*]], 0
; CHECK-NEXT: ret i1 [[C]]
;
%B = inttoptr i32 %A to i8*
%C = icmp eq i8* %B, null
ret i1 %C
; CHECK-LABEL: @test4(
; CHECK-NEXT: %C = icmp eq i32 %A, 0
; CHECK-NEXT: ret i1 %C
}
define i1 @test4_as2(i16 %A) {
; CHECK-LABEL: @test4_as2(
; CHECK-NEXT: %C = icmp eq i16 %A, 0
; CHECK-NEXT: ret i1 %C
; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[A:%.*]], 0
; CHECK-NEXT: ret i1 [[C]]
;
%B = inttoptr i16 %A to i8 addrspace(2)*
%C = icmp eq i8 addrspace(2)* %B, null
ret i1 %C
@ -102,16 +129,19 @@ define i1 @test4_as2(i16 %A) {
%op = type { float }
%unop = type { i32 }
@Array = internal constant [1 x %op* (%op*)*] [ %op* (%op*)* @foo ] ; <[1 x %op* (%op*)*]*> [#uses=1]
@Array = internal constant [1 x %op* (%op*)*] [ %op* (%op*)* @foo ]
declare %op* @foo(%op* %X)
define %unop* @test5(%op* %O) {
%tmp = load %unop* (%op*)*, %unop* (%op*)** bitcast ([1 x %op* (%op*)*]* @Array to %unop* (%op*)**); <%unop* (%op*)*> [#uses=1]
%tmp.2 = call %unop* %tmp( %op* %O ) ; <%unop*> [#uses=1]
ret %unop* %tmp.2
; CHECK-LABEL: @test5(
; CHECK: call %op* @foo(%op* %O)
; CHECK-NEXT: [[T_2:%.*]] = call %op* @foo(%op* [[O:%.*]])
; CHECK-NEXT: [[TMP1:%.*]] = bitcast %op* [[T_2]] to %unop*
; CHECK-NEXT: ret %unop* [[TMP1]]
;
%t = load %unop* (%op*)*, %unop* (%op*)** bitcast ([1 x %op* (%op*)*]* @Array to %unop* (%op*)**); <%unop* (%op*)*> [#uses=1]
%t.2 = call %unop* %t( %op* %O )
ret %unop* %t.2
}
@ -120,10 +150,14 @@ define %unop* @test5(%op* %O) {
; the address space.
define i8 @test6(i8 addrspace(1)* %source) {
; CHECK-LABEL: @test6(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARRAYIDX223:%.*]] = addrspacecast i8 addrspace(1)* [[SOURCE:%.*]] to i8*
; CHECK-NEXT: [[T4:%.*]] = load i8, i8* [[ARRAYIDX223]], align 1
; CHECK-NEXT: ret i8 [[T4]]
;
entry:
%arrayidx223 = addrspacecast i8 addrspace(1)* %source to i8*
%tmp4 = load i8, i8* %arrayidx223
ret i8 %tmp4
; CHECK-LABEL: @test6(
; CHECK: load i8, i8* %arrayidx223
%t4 = load i8, i8* %arrayidx223
ret i8 %t4
}