247 lines
7.5 KiB
LLVM
247 lines
7.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; Tests to make sure elimination of casts is working correctly
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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target datalayout = "p:32:32-p1:32:32-p2:16:16"
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@global = global i8 0
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; This shouldn't convert to getelementptr because the relationship
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; between the arithmetic and the layout of allocated memory is
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; entirely unknown.
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define ptr @test1(ptr %t) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[TC:%.*]] = ptrtoint ptr [[T:%.*]] to i32
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; CHECK-NEXT: [[TA:%.*]] = add i32 [[TC]], 32
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; CHECK-NEXT: [[TV:%.*]] = inttoptr i32 [[TA]] to ptr
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; CHECK-NEXT: ret ptr [[TV]]
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;
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%tc = ptrtoint ptr %t to i32
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%ta = add i32 %tc, 32
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%tv = inttoptr i32 %ta to ptr
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ret ptr %tv
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}
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; These casts should be folded away.
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define i1 @test2(ptr %a, ptr %b) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%ta = ptrtoint ptr %a to i32
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%tb = ptrtoint ptr %b to i32
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%r = icmp eq i32 %ta, %tb
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ret i1 %r
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}
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; These casts should be folded away.
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define i1 @test2_as2_same_int(ptr addrspace(2) %a, ptr addrspace(2) %b) {
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; CHECK-LABEL: @test2_as2_same_int(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr addrspace(2) [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%ta = ptrtoint ptr addrspace(2) %a to i16
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%tb = ptrtoint ptr addrspace(2) %b to i16
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%r = icmp eq i16 %ta, %tb
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ret i1 %r
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}
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; These casts should be folded away.
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define i1 @test2_as2_larger(ptr addrspace(2) %a, ptr addrspace(2) %b) {
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; CHECK-LABEL: @test2_as2_larger(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr addrspace(2) [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: ret i1 [[R]]
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;
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%ta = ptrtoint ptr addrspace(2) %a to i32
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%tb = ptrtoint ptr addrspace(2) %b to i32
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%r = icmp eq i32 %ta, %tb
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ret i1 %r
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}
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; These casts should not be folded away.
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define i1 @test2_diff_as(ptr %p, ptr addrspace(1) %q) {
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; CHECK-LABEL: @test2_diff_as(
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; CHECK-NEXT: [[I0:%.*]] = ptrtoint ptr [[P:%.*]] to i32
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; CHECK-NEXT: [[I1:%.*]] = ptrtoint ptr addrspace(1) [[Q:%.*]] to i32
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; CHECK-NEXT: [[R0:%.*]] = icmp sge i32 [[I0]], [[I1]]
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; CHECK-NEXT: ret i1 [[R0]]
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;
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%i0 = ptrtoint ptr %p to i32
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%i1 = ptrtoint ptr addrspace(1) %q to i32
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%r0 = icmp sge i32 %i0, %i1
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ret i1 %r0
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}
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; These casts should not be folded away.
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define i1 @test2_diff_as_global(ptr addrspace(1) %q) {
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; CHECK-LABEL: @test2_diff_as_global(
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; CHECK-NEXT: [[I1:%.*]] = ptrtoint ptr addrspace(1) [[Q:%.*]] to i32
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; CHECK-NEXT: [[R0:%.*]] = icmp sge i32 [[I1]], ptrtoint (ptr @global to i32)
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; CHECK-NEXT: ret i1 [[R0]]
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;
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%i0 = ptrtoint ptr @global to i32
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%i1 = ptrtoint ptr addrspace(1) %q to i32
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%r0 = icmp sge i32 %i1, %i0
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ret i1 %r0
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}
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; These casts should also be folded away.
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define i1 @test3(ptr %a) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[R:%.*]] = icmp eq ptr [[A:%.*]], @global
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; CHECK-NEXT: ret i1 [[R]]
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;
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%ta = ptrtoint ptr %a to i32
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%r = icmp eq i32 %ta, ptrtoint (ptr @global to i32)
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ret i1 %r
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}
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define i1 @test4(i32 %A) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[C]]
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;
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%B = inttoptr i32 %A to ptr
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%C = icmp eq ptr %B, null
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ret i1 %C
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}
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define i1 @test4_as2(i16 %A) {
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; CHECK-LABEL: @test4_as2(
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; CHECK-NEXT: [[C:%.*]] = icmp eq i16 [[A:%.*]], 0
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; CHECK-NEXT: ret i1 [[C]]
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;
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%B = inttoptr i16 %A to ptr addrspace(2)
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%C = icmp eq ptr addrspace(2) %B, null
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ret i1 %C
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}
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; Pulling the cast out of the load allows us to eliminate the load, and then
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; the whole array.
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%op = type { float }
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%unop = type { i32 }
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@Array = internal constant [1 x ptr] [ ptr @foo ]
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declare ptr @foo(ptr %X)
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define ptr @test5(ptr %O) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[T_2:%.*]] = call ptr @foo(ptr [[O:%.*]])
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; CHECK-NEXT: ret ptr [[T_2]]
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;
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%t = load ptr, ptr @Array; <ptr> [#uses=1]
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%t.2 = call ptr %t( ptr %O )
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ret ptr %t.2
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}
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; InstCombine can not 'load (cast P)' -> cast (load P)' if the cast changes
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; the address space.
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define i8 @test6(ptr addrspace(1) %source) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[ARRAYIDX223:%.*]] = addrspacecast ptr addrspace(1) [[SOURCE:%.*]] to ptr
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; CHECK-NEXT: [[T4:%.*]] = load i8, ptr [[ARRAYIDX223]], align 1
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; CHECK-NEXT: ret i8 [[T4]]
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;
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entry:
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%arrayidx223 = addrspacecast ptr addrspace(1) %source to ptr
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%t4 = load i8, ptr %arrayidx223
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ret i8 %t4
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}
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define <2 x i32> @insertelt(<2 x i32> %x, ptr %p, i133 %index) {
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; CHECK-LABEL: @insertelt(
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i32
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; CHECK-NEXT: [[R:%.*]] = insertelement <2 x i32> [[X:%.*]], i32 [[TMP1]], i133 [[INDEX:%.*]]
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%v = inttoptr <2 x i32> %x to <2 x ptr>
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%i = insertelement <2 x ptr> %v, ptr %p, i133 %index
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%r = ptrtoint <2 x ptr> %i to <2 x i32>
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ret <2 x i32> %r
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}
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define <2 x i32> @insertelt_intptr_trunc(<2 x i64> %x, ptr %p) {
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; CHECK-LABEL: @insertelt_intptr_trunc(
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; CHECK-NEXT: [[TMP1:%.*]] = trunc <2 x i64> [[X:%.*]] to <2 x i32>
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; CHECK-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[P:%.*]] to i32
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; CHECK-NEXT: [[R:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[TMP2]], i64 0
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%v = inttoptr <2 x i64> %x to <2 x ptr>
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%i = insertelement <2 x ptr> %v, ptr %p, i32 0
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%r = ptrtoint <2 x ptr> %i to <2 x i32>
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ret <2 x i32> %r
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}
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define <2 x i32> @insertelt_intptr_zext(<2 x i8> %x, ptr %p) {
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; CHECK-LABEL: @insertelt_intptr_zext(
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; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
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; CHECK-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[P:%.*]] to i32
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; CHECK-NEXT: [[R:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[TMP2]], i64 1
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%v = inttoptr <2 x i8> %x to <2 x ptr>
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%i = insertelement <2 x ptr> %v, ptr %p, i32 1
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%r = ptrtoint <2 x ptr> %i to <2 x i32>
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ret <2 x i32> %r
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}
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define <2 x i64> @insertelt_intptr_zext_zext(<2 x i8> %x, ptr %p) {
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; CHECK-LABEL: @insertelt_intptr_zext_zext(
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; CHECK-NEXT: [[TMP1:%.*]] = zext <2 x i8> [[X:%.*]] to <2 x i32>
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; CHECK-NEXT: [[TMP2:%.*]] = ptrtoint ptr [[P:%.*]] to i32
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; CHECK-NEXT: [[TMP3:%.*]] = insertelement <2 x i32> [[TMP1]], i32 [[TMP2]], i64 0
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; CHECK-NEXT: [[R:%.*]] = zext <2 x i32> [[TMP3]] to <2 x i64>
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; CHECK-NEXT: ret <2 x i64> [[R]]
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;
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%v = inttoptr <2 x i8> %x to <2 x ptr>
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%i = insertelement <2 x ptr> %v, ptr %p, i32 0
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%r = ptrtoint <2 x ptr> %i to <2 x i64>
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ret <2 x i64> %r
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}
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declare void @use(<2 x ptr>)
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define <2 x i32> @insertelt_extra_use1(<2 x i32> %x, ptr %p) {
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; CHECK-LABEL: @insertelt_extra_use1(
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; CHECK-NEXT: [[V:%.*]] = inttoptr <2 x i32> [[X:%.*]] to <2 x ptr>
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; CHECK-NEXT: call void @use(<2 x ptr> [[V]])
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; CHECK-NEXT: [[TMP1:%.*]] = ptrtoint ptr [[P:%.*]] to i32
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; CHECK-NEXT: [[R:%.*]] = insertelement <2 x i32> [[X]], i32 [[TMP1]], i64 0
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%v = inttoptr <2 x i32> %x to <2 x ptr>
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call void @use(<2 x ptr> %v)
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%i = insertelement <2 x ptr> %v, ptr %p, i32 0
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%r = ptrtoint <2 x ptr> %i to <2 x i32>
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ret <2 x i32> %r
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}
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define <2 x i32> @insertelt_extra_use2(<2 x i32> %x, ptr %p) {
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; CHECK-LABEL: @insertelt_extra_use2(
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; CHECK-NEXT: [[V:%.*]] = inttoptr <2 x i32> [[X:%.*]] to <2 x ptr>
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; CHECK-NEXT: [[I:%.*]] = insertelement <2 x ptr> [[V]], ptr [[P:%.*]], i64 0
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; CHECK-NEXT: call void @use(<2 x ptr> [[I]])
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; CHECK-NEXT: [[R:%.*]] = ptrtoint <2 x ptr> [[I]] to <2 x i32>
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; CHECK-NEXT: ret <2 x i32> [[R]]
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;
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%v = inttoptr <2 x i32> %x to <2 x ptr>
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%i = insertelement <2 x ptr> %v, ptr %p, i32 0
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call void @use(<2 x ptr> %i)
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%r = ptrtoint <2 x ptr> %i to <2 x i32>
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ret <2 x i32> %r
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}
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