73 lines
2.4 KiB
LLVM
73 lines
2.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
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; RUN: llc < %s -mtriple=riscv32 -target-abi=ilp32f -mattr=+zfa \
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; RUN: | FileCheck %s --check-prefix=RV32
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; RUN: llc < %s -mtriple=riscv64 -target-abi=lp64f -mattr=+zfa \
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; RUN: | FileCheck %s --check-prefix=RV64
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; The purpose of this test is to check that an FLI instruction that
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; materializes an immediate is not MachineLICM'd out of a loop.
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%struct.Node = type { ptr, i8* }
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define void @process_nodes(ptr %0) nounwind {
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; RV32-LABEL: process_nodes:
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; RV32: # %bb.0: # %entry
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; RV32-NEXT: beqz a0, .LBB0_4
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; RV32-NEXT: # %bb.1: # %loop.preheader
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; RV32-NEXT: addi sp, sp, -16
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; RV32-NEXT: sw ra, 12(sp) # 4-byte Folded Spill
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; RV32-NEXT: sw s0, 8(sp) # 4-byte Folded Spill
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; RV32-NEXT: mv s0, a0
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; RV32-NEXT: .LBB0_2: # %loop
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; RV32-NEXT: # =>This Inner Loop Header: Depth=1
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; RV32-NEXT: fli.s fa0, 1.0
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; RV32-NEXT: mv a0, s0
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; RV32-NEXT: call do_it
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; RV32-NEXT: lw s0, 0(s0)
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; RV32-NEXT: bnez s0, .LBB0_2
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; RV32-NEXT: # %bb.3:
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; RV32-NEXT: lw ra, 12(sp) # 4-byte Folded Reload
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; RV32-NEXT: lw s0, 8(sp) # 4-byte Folded Reload
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; RV32-NEXT: addi sp, sp, 16
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; RV32-NEXT: .LBB0_4: # %exit
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; RV32-NEXT: ret
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;
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; RV64-LABEL: process_nodes:
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; RV64: # %bb.0: # %entry
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; RV64-NEXT: beqz a0, .LBB0_4
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; RV64-NEXT: # %bb.1: # %loop.preheader
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; RV64-NEXT: addi sp, sp, -16
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; RV64-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; RV64-NEXT: sd s0, 0(sp) # 8-byte Folded Spill
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; RV64-NEXT: mv s0, a0
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; RV64-NEXT: .LBB0_2: # %loop
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; RV64-NEXT: # =>This Inner Loop Header: Depth=1
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; RV64-NEXT: fli.s fa0, 1.0
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; RV64-NEXT: mv a0, s0
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; RV64-NEXT: call do_it
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; RV64-NEXT: ld s0, 0(s0)
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; RV64-NEXT: bnez s0, .LBB0_2
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; RV64-NEXT: # %bb.3:
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; RV64-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; RV64-NEXT: ld s0, 0(sp) # 8-byte Folded Reload
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; RV64-NEXT: addi sp, sp, 16
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; RV64-NEXT: .LBB0_4: # %exit
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; RV64-NEXT: ret
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entry:
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%1 = icmp eq ptr %0, null
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br i1 %1, label %exit, label %loop
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loop:
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%2 = phi %struct.Node* [ %4, %loop ], [ %0, %entry ]
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tail call void @do_it(float 1.000000e+00, ptr nonnull %2)
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%3 = getelementptr inbounds %struct.Node, ptr %2, i64 0, i32 0
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%4 = load ptr, ptr %3, align 8
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%5 = icmp eq ptr %4, null
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br i1 %5, label %exit, label %loop
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exit:
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ret void
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}
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declare void @do_it(float, ptr)
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