Imported Upstream version 5.18.0.167

Former-commit-id: 289509151e0fee68a1b591a20c9f109c3c789d3a

external/llvm/test/Transforms/InstCombine/alloca.ll

@@ -1,179 +0,0 @@
-; RUN: opt < %s -instcombine -S -data-layout="E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" | FileCheck %s -check-prefix=CHECK -check-prefix=ALL
-; RUN: opt < %s -instcombine -S -data-layout="E-p:32:32:32-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128" | FileCheck %s -check-prefix=P32 -check-prefix=ALL
-; RUN: opt < %s -instcombine -S | FileCheck %s -check-prefix=NODL -check-prefix=ALL
-
-
-declare void @use(...)
-
-@int = global i32 zeroinitializer
-
-; Zero byte allocas should be merged if they can't be deleted.
-; CHECK-LABEL: @test(
-; CHECK: alloca
-; CHECK-NOT: alloca
-define void @test() {
-        %X = alloca [0 x i32]           ; <[0 x i32]*> [#uses=1]
-        call void (...) @use( [0 x i32]* %X )
-        %Y = alloca i32, i32 0          ; <i32*> [#uses=1]
-        call void (...) @use( i32* %Y )
-        %Z = alloca {  }                ; <{  }*> [#uses=1]
-        call void (...) @use( {  }* %Z )
-        %size = load i32, i32* @int
-        %A = alloca {{}}, i32 %size
-        call void (...) @use( {{}}* %A )
-        ret void
-}
-
-; Zero byte allocas should be deleted.
-; CHECK-LABEL: @test2(
-; CHECK-NOT: alloca
-define void @test2() {
-        %A = alloca i32         ; <i32*> [#uses=1]
-        store i32 123, i32* %A
-        ret void
-}
-
-; Zero byte allocas should be deleted.
-; CHECK-LABEL: @test3(
-; CHECK-NOT: alloca
-define void @test3() {
-        %A = alloca { i32 }             ; <{ i32 }*> [#uses=1]
-        %B = getelementptr { i32 }, { i32 }* %A, i32 0, i32 0            ; <i32*> [#uses=1]
-        store i32 123, i32* %B
-        ret void
-}
-
-; CHECK-LABEL: @test4(
-; CHECK: = zext i32 %n to i64
-; CHECK: %A = alloca i32, i64 %
-define i32* @test4(i32 %n) {
-  %A = alloca i32, i32 %n
-  ret i32* %A
-}
-
-; Allocas which are only used by GEPs, bitcasts, addrspacecasts, and stores
-; (transitively) should be deleted.
-define void @test5() {
-; CHECK-LABEL: @test5(
-; CHECK-NOT: alloca
-; CHECK-NOT: store
-; CHECK: ret
-
-entry:
-  %a = alloca { i32 }
-  %b = alloca i32*
-  %c = alloca i32
-  %a.1 = getelementptr { i32 }, { i32 }* %a, i32 0, i32 0
-  store i32 123, i32* %a.1
-  store i32* %a.1, i32** %b
-  %b.1 = bitcast i32** %b to i32*
-  store i32 123, i32* %b.1
-  %a.2 = getelementptr { i32 }, { i32 }* %a, i32 0, i32 0
-  store atomic i32 2, i32* %a.2 unordered, align 4
-  %a.3 = getelementptr { i32 }, { i32 }* %a, i32 0, i32 0
-  store atomic i32 3, i32* %a.3 release, align 4
-  %a.4 = getelementptr { i32 }, { i32 }* %a, i32 0, i32 0
-  store atomic i32 4, i32* %a.4 seq_cst, align 4
-  %c.1 = addrspacecast i32* %c to i32 addrspace(1)*
-  store i32 123, i32 addrspace(1)* %c.1
-  ret void
-}
-
-declare void @f(i32* %p)
-
-; Check that we don't delete allocas in some erroneous cases.
-define void @test6() {
-; CHECK-LABEL: @test6(
-; CHECK-NOT: ret
-; CHECK: alloca
-; CHECK-NEXT: alloca
-; CHECK: ret
-
-entry:
-  %a = alloca { i32 }
-  %b = alloca i32
-  %a.1 = getelementptr { i32 }, { i32 }* %a, i32 0, i32 0
-  store volatile i32 123, i32* %a.1
-  tail call void @f(i32* %b)
-  ret void
-}
-
-; PR14371
-%opaque_type = type opaque
-%real_type = type { { i32, i32* } }
-
-@opaque_global = external constant %opaque_type, align 4
-
-define void @test7() {
-entry:
-  %0 = alloca %real_type, align 4
-  %1 = bitcast %real_type* %0 to i8*
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %1, i8* bitcast (%opaque_type* @opaque_global to i8*), i32 8, i32 1, i1 false)
-  ret void
-}
-
-declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
-
-
-; Check that the GEP indices use the pointer size, or 64 if unknown
-define void @test8() {
-; CHECK-LABEL: @test8(
-; CHECK: alloca [100 x i32]
-; CHECK: getelementptr inbounds [100 x i32], [100 x i32]* %x1, i64 0, i64 0
-
-; P32-LABEL: @test8(
-; P32: alloca [100 x i32]
-; P32: getelementptr inbounds [100 x i32], [100 x i32]* %x1, i32 0, i32 0
-
-; NODL-LABEL: @test8(
-; NODL: alloca [100 x i32]
-; NODL: getelementptr inbounds [100 x i32], [100 x i32]* %x1, i64 0, i64 0
-  %x = alloca i32, i32 100
-  call void (...) @use(i32* %x)
-  ret void
-}
-
-; PR19569
-%struct_type = type { i32, i32 }
-declare void @test9_aux(<{ %struct_type }>* inalloca)
-declare i8* @llvm.stacksave()
-declare void @llvm.stackrestore(i8*)
-
-define void @test9(%struct_type* %a) {
-; CHECK-LABEL: @test9(
-entry:
-  %inalloca.save = call i8* @llvm.stacksave()
-  %argmem = alloca inalloca <{ %struct_type }>
-; CHECK: alloca inalloca i64, align 8
-  %0 = getelementptr inbounds <{ %struct_type }>, <{ %struct_type }>* %argmem, i32 0, i32 0
-  %1 = bitcast %struct_type* %0 to i8*
-  %2 = bitcast %struct_type* %a to i8*
-  call void @llvm.memcpy.p0i8.p0i8.i32(i8* %1, i8* %2, i32 8, i32 4, i1 false)
-  call void @test9_aux(<{ %struct_type }>* inalloca %argmem)
-  call void @llvm.stackrestore(i8* %inalloca.save)
-  ret void
-}
-
-define void @test10() {
-entry:
-; ALL-LABEL: @test10(
-; ALL: %v32 = alloca i1, align 8
-; ALL: %v64 = alloca i1, align 8
-; ALL: %v33 = alloca i1, align 8
-  %v32 = alloca i1, align 8
-  %v64 = alloca i1, i64 1, align 8
-  %v33 = alloca i1, i33 1, align 8
-  call void (...) @use(i1* %v32, i1* %v64, i1* %v33)
-  ret void
-}
-
-define void @test11() {
-entry:
-; ALL-LABEL: @test11(
-; ALL: %y = alloca i32
-; ALL: call void (...) @use(i32* nonnull @int) [ "blah"(i32* %y) ]
-; ALL: ret void
-  %y = alloca i32
-  call void (...) @use(i32* nonnull @int) [ "blah"(i32* %y) ]
-  ret void
-}