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1648ceaabc
Now that the call graph supports efficient replacement of a function and spurious reference edges, we can port ArgumentPromotion to the new pass manager very easily. The old PM-specific bits are sunk into callbacks that the new PM simply doesn't use. Unlike the old PM, the new PM simply does argument promotion and afterward does the update to LCG reflecting the promoted function. Differential Revision: https://reviews.llvm.org/D29580 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294667 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
1.3 KiB
LLVM
30 lines
1.3 KiB
LLVM
; RUN: opt < %s -argpromotion -S | FileCheck %s
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; RUN: opt < %s -passes=argpromotion -S | FileCheck %s
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; Unused arguments from variadic functions cannot be eliminated as that changes
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; their classiciation according to the SysV amd64 ABI. Clang and other frontends
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; bake in the classification when they use things like byval, as in this test.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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%struct.tt0 = type { i64, i64 }
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%struct.__va_list_tag = type { i32, i32, i8*, i8* }
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@t45 = internal global %struct.tt0 { i64 1335139741, i64 438042995 }, align 8
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; Function Attrs: nounwind uwtable
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define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 {
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entry:
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tail call void (i8*, i8*, i8*, i8*, i8*, ...) @callee_t0f(i8* undef, i8* undef, i8* undef, i8* undef, i8* undef, %struct.tt0* byval align 8 @t45)
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ret i32 0
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}
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; Function Attrs: nounwind uwtable
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define internal void @callee_t0f(i8* nocapture readnone %tp13, i8* nocapture readnone %tp14, i8* nocapture readnone %tp15, i8* nocapture readnone %tp16, i8* nocapture readnone %tp17, ...) {
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entry:
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ret void
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}
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; CHECK-LABEL: define internal void @callee_t0f(i8* nocapture readnone %tp13, i8* nocapture readnone %tp14, i8* nocapture readnone %tp15, i8* nocapture readnone %tp16, i8* nocapture readnone %tp17, ...)
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