74 lines
4.2 KiB
LLVM
74 lines
4.2 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --function-signature --scrub-attributes
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; In PR41658, argpromotion put an inalloca in a position that per the
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; calling convention is passed in a register. This test verifies that
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; we don't do that anymore. It also verifies that the combination of
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; globalopt and argpromotion is able to optimize the call safely.
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;
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; RUN: opt -S -passes=argpromotion %s | FileCheck %s --check-prefix=ARGPROMOTION
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; RUN: opt -S -passes=globalopt,argpromotion %s | FileCheck %s --check-prefix=GLOBALOPT_ARGPROMOTION
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target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
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target triple = "i386-pc-windows-msvc19.11.0"
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%struct.a = type { i8 }
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define internal x86_thiscallcc void @internalfun(ptr %this, <{ %struct.a }>* inalloca(<{ %struct.a }>)) {
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; ARGPROMOTION-LABEL: define {{[^@]+}}@internalfun
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; ARGPROMOTION-SAME: (ptr [[THIS:%.*]], ptr inalloca(<{ [[STRUCT_A:%.*]] }>) [[TMP0:%.*]]) {
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; ARGPROMOTION-NEXT: entry:
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; ARGPROMOTION-NEXT: [[A:%.*]] = getelementptr inbounds <{ [[STRUCT_A]] }>, ptr [[TMP0]], i32 0, i32 0
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; ARGPROMOTION-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_A]] }>, align 4
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; ARGPROMOTION-NEXT: [[TMP1:%.*]] = getelementptr inbounds <{ [[STRUCT_A]] }>, ptr [[ARGMEM]], i32 0, i32 0
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; ARGPROMOTION-NEXT: [[CALL:%.*]] = call x86_thiscallcc ptr @copy_ctor(ptr [[TMP1]], ptr dereferenceable(1) [[A]])
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; ARGPROMOTION-NEXT: call void @ext(ptr inalloca(<{ [[STRUCT_A]] }>) [[ARGMEM]])
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; ARGPROMOTION-NEXT: ret void
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;
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; GLOBALOPT_ARGPROMOTION-LABEL: define {{[^@]+}}@internalfun
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; GLOBALOPT_ARGPROMOTION-SAME: (ptr [[TMP0:%.*]]) unnamed_addr {
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; GLOBALOPT_ARGPROMOTION-NEXT: entry:
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; GLOBALOPT_ARGPROMOTION-NEXT: [[A:%.*]] = getelementptr inbounds <{ [[STRUCT_A:%.*]] }>, ptr [[TMP0]], i32 0, i32 0
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; GLOBALOPT_ARGPROMOTION-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_A]] }>, align 4
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; GLOBALOPT_ARGPROMOTION-NEXT: [[TMP1:%.*]] = getelementptr inbounds <{ [[STRUCT_A]] }>, ptr [[ARGMEM]], i32 0, i32 0
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; GLOBALOPT_ARGPROMOTION-NEXT: [[CALL:%.*]] = call x86_thiscallcc ptr @copy_ctor(ptr [[TMP1]], ptr dereferenceable(1) [[A]])
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; GLOBALOPT_ARGPROMOTION-NEXT: call void @ext(ptr inalloca(<{ [[STRUCT_A]] }>) [[ARGMEM]])
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; GLOBALOPT_ARGPROMOTION-NEXT: ret void
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;
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entry:
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%a = getelementptr inbounds <{ %struct.a }>, <{ %struct.a }>* %0, i32 0, i32 0
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%argmem = alloca inalloca <{ %struct.a }>, align 4
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%1 = getelementptr inbounds <{ %struct.a }>, <{ %struct.a }>* %argmem, i32 0, i32 0
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%call = call x86_thiscallcc ptr @copy_ctor(ptr %1, ptr dereferenceable(1) %a)
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call void @ext(<{ %struct.a }>* inalloca(<{ %struct.a }>) %argmem)
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ret void
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}
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; This is here to ensure @internalfun is live.
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define void @exportedfun(ptr %a) {
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; ARGPROMOTION-LABEL: define {{[^@]+}}@exportedfun
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; ARGPROMOTION-SAME: (ptr [[A:%.*]]) {
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; ARGPROMOTION-NEXT: [[INALLOCA_SAVE:%.*]] = tail call ptr @llvm.stacksave.p0()
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; ARGPROMOTION-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_A:%.*]] }>, align 4
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; ARGPROMOTION-NEXT: call x86_thiscallcc void @internalfun(ptr [[A]], ptr inalloca(<{ [[STRUCT_A]] }>) [[ARGMEM]])
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; ARGPROMOTION-NEXT: call void @llvm.stackrestore.p0(ptr [[INALLOCA_SAVE]])
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; ARGPROMOTION-NEXT: ret void
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;
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; GLOBALOPT_ARGPROMOTION-LABEL: define {{[^@]+}}@exportedfun
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; GLOBALOPT_ARGPROMOTION-SAME: (ptr [[A:%.*]]) local_unnamed_addr {
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; GLOBALOPT_ARGPROMOTION-NEXT: [[INALLOCA_SAVE:%.*]] = tail call ptr @llvm.stacksave.p0()
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; GLOBALOPT_ARGPROMOTION-NEXT: [[ARGMEM:%.*]] = alloca inalloca <{ [[STRUCT_A:%.*]] }>, align 4
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; GLOBALOPT_ARGPROMOTION-NEXT: call fastcc void @internalfun(ptr [[ARGMEM]])
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; GLOBALOPT_ARGPROMOTION-NEXT: call void @llvm.stackrestore.p0(ptr [[INALLOCA_SAVE]])
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; GLOBALOPT_ARGPROMOTION-NEXT: ret void
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;
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%inalloca.save = tail call ptr @llvm.stacksave()
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%argmem = alloca inalloca <{ %struct.a }>, align 4
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call x86_thiscallcc void @internalfun(ptr %a, <{ %struct.a }>* inalloca(<{ %struct.a }>) %argmem)
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call void @llvm.stackrestore(ptr %inalloca.save)
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ret void
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}
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declare x86_thiscallcc ptr @copy_ctor(ptr returned, ptr dereferenceable(1))
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declare void @ext(<{ %struct.a }>* inalloca(<{ %struct.a }>))
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declare ptr @llvm.stacksave()
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declare void @llvm.stackrestore(ptr)
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