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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
60 lines
2.0 KiB
LLVM
60 lines
2.0 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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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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%union.u = type { x86_fp80 }
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%struct.s = type { double, i16, i8, [5 x i8] }
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@b = internal global %struct.s { double 3.14, i16 9439, i8 25, [5 x i8] undef }, align 16
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%struct.Foo = type { i32, i64 }
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@a = internal global %struct.Foo { i32 1, i64 2 }, align 8
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define void @run() {
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entry:
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tail call i8 @UseLongDoubleUnsafely(%union.u* byval align 16 bitcast (%struct.s* @b to %union.u*))
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tail call x86_fp80 @UseLongDoubleSafely(%union.u* byval align 16 bitcast (%struct.s* @b to %union.u*))
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call i64 @AccessPaddingOfStruct(%struct.Foo* @a)
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call i64 @CaptureAStruct(%struct.Foo* @a)
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ret void
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}
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; CHECK: internal i8 @UseLongDoubleUnsafely(%union.u* byval align 16 %arg) {
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define internal i8 @UseLongDoubleUnsafely(%union.u* byval align 16 %arg) {
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entry:
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%bitcast = bitcast %union.u* %arg to %struct.s*
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%gep = getelementptr inbounds %struct.s, %struct.s* %bitcast, i64 0, i32 2
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%result = load i8, i8* %gep
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ret i8 %result
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}
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; CHECK: internal x86_fp80 @UseLongDoubleSafely(x86_fp80 {{%.*}}) {
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define internal x86_fp80 @UseLongDoubleSafely(%union.u* byval align 16 %arg) {
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%gep = getelementptr inbounds %union.u, %union.u* %arg, i64 0, i32 0
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%fp80 = load x86_fp80, x86_fp80* %gep
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ret x86_fp80 %fp80
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}
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; CHECK: define internal i64 @AccessPaddingOfStruct(%struct.Foo* byval %a) {
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define internal i64 @AccessPaddingOfStruct(%struct.Foo* byval %a) {
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%p = bitcast %struct.Foo* %a to i64*
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%v = load i64, i64* %p
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ret i64 %v
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}
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; CHECK: define internal i64 @CaptureAStruct(%struct.Foo* byval %a) {
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define internal i64 @CaptureAStruct(%struct.Foo* byval %a) {
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entry:
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%a_ptr = alloca %struct.Foo*
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br label %loop
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loop:
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%phi = phi %struct.Foo* [ null, %entry ], [ %gep, %loop ]
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%0 = phi %struct.Foo* [ %a, %entry ], [ %0, %loop ]
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store %struct.Foo* %phi, %struct.Foo** %a_ptr
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%gep = getelementptr %struct.Foo, %struct.Foo* %a, i64 0
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br label %loop
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}
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