05ad5fd213
Summary: Direct sibling of D62223 patch. While i don't have a direct motivational pattern for this, it would seem to make sense to handle both patterns (or none), for symmetry? The aarch64 changes look neutral; sparc and systemz look like improvement (one less instruction each); x86 changes - 32bit case improves, 64bit case shows that LEA no longer gets constructed, which may be because that whole test is `-mattr=+slow-lea,+slow-3ops-lea` https://rise4fun.com/Alive/ffh This is a recommit, originally committed in rL361852, but reverted to investigate test-suite compile-time hangs, and then reverted in rL362109 to fix missing constant folds that were causing endless combine loops. Reviewers: RKSimon, craig.topper, spatel, t.p.northover Reviewed By: t.p.northover Subscribers: t.p.northover, jyknight, javed.absar, kristof.beyls, fedor.sergeev, jrtc27, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D62252 llvm-svn: 362143
76 lines
2.5 KiB
LLVM
76 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -march=sparc < %s | FileCheck %s --check-prefix=V8
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; RUN: llc -march=sparcv9 < %s | FileCheck %s --check-prefix=SPARC64
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; (this should ideally be doing "add 4+7; and -8", instead of
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; "add 7; and -8; add 8"; see comments in LowerDYNAMIC_STACKALLOC)
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define void @variable_alloca_with_adj_call_stack(i32 %num) {
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; V8-LABEL: variable_alloca_with_adj_call_stack:
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; V8: .cfi_startproc
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; V8-NEXT: ! %bb.0: ! %entry
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; V8-NEXT: save %sp, -96, %sp
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; V8-NEXT: .cfi_def_cfa_register %fp
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; V8-NEXT: .cfi_window_save
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; V8-NEXT: .cfi_register 15, 31
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; V8-NEXT: add %i0, 7, %i0
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; V8-NEXT: and %i0, -8, %i0
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; V8-NEXT: sub %sp, %i0, %i0
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; V8-NEXT: add %i0, -8, %sp
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; V8-NEXT: add %i0, 88, %o0
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; V8-NEXT: add %sp, -16, %sp
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; V8-NEXT: st %o0, [%sp+104]
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; V8-NEXT: st %o0, [%sp+100]
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; V8-NEXT: st %o0, [%sp+96]
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; V8-NEXT: st %o0, [%sp+92]
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; V8-NEXT: mov %o0, %o1
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; V8-NEXT: mov %o0, %o2
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; V8-NEXT: mov %o0, %o3
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; V8-NEXT: mov %o0, %o4
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; V8-NEXT: call foo
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; V8-NEXT: mov %o0, %o5
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; V8-NEXT: add %sp, 16, %sp
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; V8-NEXT: ret
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; V8-NEXT: restore
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;
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; SPARC64-LABEL: variable_alloca_with_adj_call_stack:
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; SPARC64: .cfi_startproc
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; SPARC64-NEXT: ! %bb.0: ! %entry
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; SPARC64-NEXT: save %sp, -128, %sp
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; SPARC64-NEXT: .cfi_def_cfa_register %fp
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; SPARC64-NEXT: .cfi_window_save
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; SPARC64-NEXT: .cfi_register 15, 31
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; SPARC64-NEXT: srl %i0, 0, %i0
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; SPARC64-NEXT: add %i0, 15, %i0
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; SPARC64-NEXT: sethi 4194303, %i1
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; SPARC64-NEXT: or %i1, 1008, %i1
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; SPARC64-NEXT: sethi 0, %i2
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; SPARC64-NEXT: or %i2, 1, %i2
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; SPARC64-NEXT: sllx %i2, 32, %i2
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; SPARC64-NEXT: or %i2, %i1, %i1
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; SPARC64-NEXT: and %i0, %i1, %i0
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; SPARC64-NEXT: sub %sp, %i0, %i0
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; SPARC64-NEXT: add %i0, 2175, %o0
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; SPARC64-NEXT: mov %i0, %sp
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; SPARC64-NEXT: add %sp, -80, %sp
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; SPARC64-NEXT: stx %o0, [%sp+2247]
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; SPARC64-NEXT: stx %o0, [%sp+2239]
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; SPARC64-NEXT: stx %o0, [%sp+2231]
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; SPARC64-NEXT: stx %o0, [%sp+2223]
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; SPARC64-NEXT: mov %o0, %o1
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; SPARC64-NEXT: mov %o0, %o2
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; SPARC64-NEXT: mov %o0, %o3
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; SPARC64-NEXT: mov %o0, %o4
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; SPARC64-NEXT: call foo
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; SPARC64-NEXT: mov %o0, %o5
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; SPARC64-NEXT: add %sp, 80, %sp
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; SPARC64-NEXT: ret
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; SPARC64-NEXT: restore
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entry:
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%0 = alloca i8, i32 %num, align 8
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call void @foo(i8* %0, i8* %0, i8* %0, i8* %0, i8* %0, i8* %0, i8* %0, i8* %0, i8* %0, i8* %0)
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ret void
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}
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declare void @foo(i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*, i8*);
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