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8e0ed2340c
Summary: This change enables frame pointer elimination in non-leaf functions. The -fomit-frame-pointer option still needs to be used when compiling via clang (or an equivalent method of not setting the 'no-frame-pointer-elim*' function attributes if generating llvm IR via some other method) to take advantage of this optimization. This change should be NFC when compiling via clang without -fomit-frame-pointer. Reviewers: t.p.northover Subscribers: aemerson, rengolin, tberghammer, qcolombet, llvm-commits, danalbert, mcrosier, srhines Differential Revision: http://reviews.llvm.org/D17730 llvm-svn: 262495
25 lines
741 B
LLVM
25 lines
741 B
LLVM
; This test should cause the TargetMaterializeAlloca to be invoked
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; RUN: llc -O0 -fast-isel-abort=1 -verify-machineinstrs -mtriple=arm64-apple-darwin -disable-fp-elim < %s | FileCheck %s
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%struct.S1Ty = type { i64 }
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%struct.S2Ty = type { %struct.S1Ty, %struct.S1Ty }
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define void @takeS1(%struct.S1Ty* %V) nounwind {
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entry:
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%V.addr = alloca %struct.S1Ty*, align 8
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store %struct.S1Ty* %V, %struct.S1Ty** %V.addr, align 8
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ret void
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}
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define void @main() nounwind {
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entry:
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; CHECK: main
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; CHECK: mov x29, sp
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; CHECK: mov [[REG:x[0-9]+]], sp
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; CHECK-NEXT: add x0, [[REG]], #8
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%E = alloca %struct.S2Ty, align 4
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%B = getelementptr inbounds %struct.S2Ty, %struct.S2Ty* %E, i32 0, i32 1
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call void @takeS1(%struct.S1Ty* %B)
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ret void
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}
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