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llvm-project/llvm/test/CodeGen/X86/pr35316.ll

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[DAG] Prevent NodeId pruning of TokenFactors in Instruction Selection. Summary: Instruction Selection preserves relative orders of all nodes save TokenFactors which we treat specially. As a result Node Ids for TokenFactors may violate the topological ordering and should not be considered as valid pruning candidates in predecessor search. Fixes PR35316. Reviewers: RKSimon, hfinkel Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D42701 llvm-svn: 323880
2018-01-31 23:23:17 +08:00
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s --check-prefix=CHECK
; This tests for a cyclic dependencies in the generated DAG.
[test] Add explicit dso_local to constant/global variable declarations They are currently implicit because TargetMachine::shouldAssumeDSOLocal implies dso_local. For external data, clang -fno-pic emits the dso_local specifier for ELF and non-MinGW COFF. Adding explicit dso_local makes these tests in align with the clang behavior and helps implementing an option to use GOT indirection for external data access in -fno-pic mode (to avoid copy relocations).
2020-12-05 05:51:01 +08:00
@c = external dso_local local_unnamed_addr global i32, align 4
@a = external dso_local local_unnamed_addr global i32, align 4
@b = external dso_local local_unnamed_addr global i32, align 4
[DAG] Prevent NodeId pruning of TokenFactors in Instruction Selection. Summary: Instruction Selection preserves relative orders of all nodes save TokenFactors which we treat specially. As a result Node Ids for TokenFactors may violate the topological ordering and should not be considered as valid pruning candidates in predecessor search. Fixes PR35316. Reviewers: RKSimon, hfinkel Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D42701 llvm-svn: 323880
2018-01-31 23:23:17 +08:00
[X86] Rename function main->foo in CodeGen/X86/pr35316.ll. NFC Using "void main" might be confusing for some cases. llvm-svn: 324997
2018-02-13 18:58:19 +08:00
define void @foo() {
; CHECK-LABEL: foo:
[DAG] Prevent NodeId pruning of TokenFactors in Instruction Selection. Summary: Instruction Selection preserves relative orders of all nodes save TokenFactors which we treat specially. As a result Node Ids for TokenFactors may violate the topological ordering and should not be considered as valid pruning candidates in predecessor search. Fixes PR35316. Reviewers: RKSimon, hfinkel Subscribers: hiraditya, llvm-commits Differential Revision: https://reviews.llvm.org/D42701 llvm-svn: 323880
2018-01-31 23:23:17 +08:00
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: movl $0, {{.*}}(%rip)
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %r8d
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %edi
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %esi
; CHECK-NEXT: movl -{{[0-9]+}}(%rsp), %eax
; CHECK-NEXT: cltd
; CHECK-NEXT: idivl {{.*}}(%rip)
; CHECK-NEXT: movl %eax, %ecx
; CHECK-NEXT: movl {{.*}}(%rip), %eax
; CHECK-NEXT: cltd
; CHECK-NEXT: idivl %esi
; CHECK-NEXT: andl %edi, %eax
; CHECK-NEXT: addl %ecx, %eax
; CHECK-NEXT: andl %r8d, %eax
; CHECK-NEXT: movl %eax, (%rax)
; CHECK-NEXT: retq
entry:
%e = alloca i32, align 4
%e.0.e.0.24 = load volatile i32, i32* %e, align 4
%e.0.e.0.25 = load volatile i32, i32* %e, align 4
%e.0.e.0.26 = load volatile i32, i32* %e, align 4
%e.0.e.0.27 = load volatile i32, i32* %e, align 4
%e.0.e.0.28 = load volatile i32, i32* %e, align 4
%e.0.e.0.29 = load volatile i32, i32* %e, align 4
%e.0.e.0.30 = load volatile i32, i32* %e, align 4
%e.0.e.0.31 = load volatile i32, i32* %e, align 4
%e.0.e.0.32 = load volatile i32, i32* %e, align 4
%e.0.e.0.33 = load volatile i32, i32* %e, align 4
%e.0.e.0.34 = load volatile i32, i32* %e, align 4
%e.0.e.0.35 = load volatile i32, i32* %e, align 4
%e.0.e.0.36 = load volatile i32, i32* %e, align 4
%e.0.e.0.37 = load volatile i32, i32* %e, align 4
%e.0.e.0.39 = load volatile i32, i32* %e, align 4
%tmp = load i32, i32* @a, align 4
store i32 0, i32* @b, align 4
%e.0.e.0.41 = load volatile i32, i32* %e, align 4
%add17 = add nsw i32 %e.0.e.0.41, 0
%e.0.e.0.42 = load volatile i32, i32* %e, align 4
%tmp1 = load i32, i32* @c, align 4
%e.0.e.0.43 = load volatile i32, i32* %e, align 4
%div = sdiv i32 %tmp1, %e.0.e.0.43
%and18 = and i32 %div, %e.0.e.0.42
%e.0.e.0.44 = load volatile i32, i32* %e, align 4
%div19 = sdiv i32 %e.0.e.0.44, %tmp
%add20 = add nsw i32 %div19, %and18
%and21 = and i32 %add20, %add17
store volatile i32 %and21, i32* undef, align 4
ret void
}