3787fbf040
This follows up #115495 by enabling merging of external globals by default, which had been left as a next step in order to make the previous change more incremental and so we can more easily narrow down on any identified regressions. Enabling merging of external globals matches what Arm does (for non mach-o targets), though AArch64 doesn't as there were [some concerns](https://reviews.llvm.org/D61947) it might cause regressions in some cases. See https://github.com/llvm/llvm-project/pull/117880 for benchmark figures and discussion.
47 lines
1.9 KiB
LLVM
47 lines
1.9 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: sed 's/ArrSize/100/g' %s | llc -mtriple=riscv32 \
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; RUN: -verify-machineinstrs | FileCheck %s
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; RUN: sed 's/ArrSize/100/g' %s | llc -mtriple=riscv64 \
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; RUN: -verify-machineinstrs | FileCheck %s
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; RUN: sed 's/ArrSize/101/g' %s | llc -mtriple=riscv32 \
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; RUN: -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-TOOBIG
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; RUN: sed 's/ArrSize/101/g' %s | llc -mtriple=riscv64 \
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; RUN: -verify-machineinstrs | FileCheck %s -check-prefix=CHECK-TOOBIG
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; This test demonstrates that the MaxOffset is set correctly for RISC-V by
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; constructing an input that is at the limit and comparing.
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@ga1 = dso_local global [410 x i32] zeroinitializer, align 4
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@ga2 = dso_local global [ArrSize x i32] zeroinitializer, align 4
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@gi = dso_local global i32 0, align 4
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; TODO: It would be better for codesize if the final store below was
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; `sw a0, 0(a2)`.
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define void @f1(i32 %a) nounwind {
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; CHECK-LABEL: f1:
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; CHECK: # %bb.0:
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; CHECK-NEXT: lui a1, %hi(.L_MergedGlobals)
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; CHECK-NEXT: addi a2, a1, %lo(.L_MergedGlobals)
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; CHECK-NEXT: sw a0, 2044(a2)
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; CHECK-NEXT: sw a0, 404(a2)
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; CHECK-NEXT: sw a0, %lo(.L_MergedGlobals)(a1)
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; CHECK-NEXT: ret
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;
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; CHECK-TOOBIG-LABEL: f1:
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; CHECK-TOOBIG: # %bb.0:
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; CHECK-TOOBIG-NEXT: lui a1, %hi(ga1+1640)
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; CHECK-TOOBIG-NEXT: lui a2, %hi(.L_MergedGlobals)
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; CHECK-TOOBIG-NEXT: addi a3, a2, %lo(.L_MergedGlobals)
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; CHECK-TOOBIG-NEXT: sw a0, %lo(ga1+1640)(a1)
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; CHECK-TOOBIG-NEXT: sw a0, 408(a3)
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; CHECK-TOOBIG-NEXT: sw a0, %lo(.L_MergedGlobals)(a2)
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; CHECK-TOOBIG-NEXT: ret
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%ga1_end = getelementptr inbounds [410 x i32], ptr @ga1, i32 0, i64 410
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%ga2_end = getelementptr inbounds [ArrSize x i32], ptr @ga2, i32 0, i64 ArrSize
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store i32 %a, ptr %ga1_end, align 4
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store i32 %a, ptr %ga2_end, align 4
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store i32 %a, ptr @gi, align 4
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ret void
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}
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