4e4cb4359a
The comment shows that at the time we were worried about producing the alias in assembly that might be ingested by a binutils version that doesn't yet support it. binutils gained support over 4 years ago <https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=c2137f55ad04e451d834048d4bfec1de2daea20e>. With all the changes in areas such as ELF attributes, if you tried to use LLVM's RISC-V assembler output with a binutils that old then zext.b would be the least of your worries.
180 lines
6.6 KiB
LLVM
180 lines
6.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s \
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; RUN: | FileCheck %s
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; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
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declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0
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; Function Attrs: nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write)
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declare void @llvm.assume(i1 noundef) #0
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declare fastcc i1 @S_reginclass()
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declare fastcc ptr @Perl_av_store(i64)
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define fastcc i32 @S_regrepeat(ptr %startposp, i32 %max, i8 %0, i1 %cmp343) nounwind {
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; CHECK-LABEL: S_regrepeat:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: addi sp, sp, -32
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; CHECK-NEXT: sd ra, 24(sp) # 8-byte Folded Spill
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; CHECK-NEXT: sd s0, 16(sp) # 8-byte Folded Spill
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; CHECK-NEXT: sd s1, 8(sp) # 8-byte Folded Spill
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; CHECK-NEXT: sd s2, 0(sp) # 8-byte Folded Spill
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; CHECK-NEXT: zext.b a2, a2
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; CHECK-NEXT: addi a4, a2, -19
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; CHECK-NEXT: li a5, 2
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; CHECK-NEXT: mv a0, a1
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; CHECK-NEXT: bltu a4, a5, .LBB0_4
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; CHECK-NEXT: # %bb.1: # %entry
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; CHECK-NEXT: li a1, 1
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; CHECK-NEXT: bltu a1, a2, .LBB0_8
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; CHECK-NEXT: # %bb.2: # %do_exactf
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; CHECK-NEXT: andi a3, a3, 1
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; CHECK-NEXT: beqz a3, .LBB0_10
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; CHECK-NEXT: # %bb.3: # %land.rhs251
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; CHECK-NEXT: lw zero, 0(zero)
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; CHECK-NEXT: li s0, 1
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; CHECK-NEXT: bnez s0, .LBB0_9
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; CHECK-NEXT: j .LBB0_8
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; CHECK-NEXT: .LBB0_4: # %sw.bb336
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; CHECK-NEXT: mv s1, a0
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; CHECK-NEXT: li s0, 0
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; CHECK-NEXT: andi s2, a3, 1
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; CHECK-NEXT: .LBB0_5: # %land.rhs345
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: call S_reginclass
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; CHECK-NEXT: andi a0, a0, 1
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; CHECK-NEXT: beqz a0, .LBB0_7
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; CHECK-NEXT: # %bb.6: # %while.body350
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; CHECK-NEXT: # in Loop: Header=BB0_5 Depth=1
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; CHECK-NEXT: addiw s0, s0, 1
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; CHECK-NEXT: bnez s2, .LBB0_5
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; CHECK-NEXT: j .LBB0_8
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; CHECK-NEXT: .LBB0_7:
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; CHECK-NEXT: mv a0, s1
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; CHECK-NEXT: bnez s0, .LBB0_9
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; CHECK-NEXT: .LBB0_8: # %if.else1492
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; CHECK-NEXT: li a0, 0
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; CHECK-NEXT: .LBB0_9: # %if.end1497
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; CHECK-NEXT: ld ra, 24(sp) # 8-byte Folded Reload
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; CHECK-NEXT: ld s0, 16(sp) # 8-byte Folded Reload
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; CHECK-NEXT: ld s1, 8(sp) # 8-byte Folded Reload
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; CHECK-NEXT: ld s2, 0(sp) # 8-byte Folded Reload
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; CHECK-NEXT: addi sp, sp, 32
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; CHECK-NEXT: ret
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; CHECK-NEXT: .LBB0_10:
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; CHECK-NEXT: j .LBB0_8
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entry:
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switch i8 %0, label %if.else1492 [
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i8 19, label %sw.bb336
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i8 20, label %sw.bb336
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i8 1, label %do_exactf
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i8 0, label %do_exactf
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]
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do_exactf: ; preds = %entry, %entry
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br i1 %cmp343, label %land.rhs251, label %if.end334
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land.rhs251: ; preds = %do_exactf
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%bcmp414 = load volatile i32, ptr null, align 4
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br label %if.end334
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if.end334: ; preds = %land.rhs251, %do_exactf
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%hardcount.7 = phi i32 [ 0, %do_exactf ], [ 1, %land.rhs251 ]
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call void @llvm.lifetime.end.p0(i64 0, ptr null)
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br label %sw.epilog1489
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sw.bb336: ; preds = %entry, %entry
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br label %land.rhs345
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land.rhs345: ; preds = %while.body350, %sw.bb336
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%hardcount.8634 = phi i32 [ %inc356, %while.body350 ], [ 0, %sw.bb336 ]
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%call347 = call fastcc i1 @S_reginclass()
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br i1 %call347, label %while.body350, label %sw.epilog1489
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while.body350: ; preds = %land.rhs345
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%inc356 = add i32 %hardcount.8634, 1
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br i1 %cmp343, label %land.rhs345, label %if.end1497
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sw.epilog1489: ; preds = %land.rhs345, %if.end334
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%hardcount.20 = phi i32 [ %hardcount.7, %if.end334 ], [ %hardcount.8634, %land.rhs345 ]
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%tobool1490.not = icmp eq i32 %hardcount.20, 0
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br i1 %tobool1490.not, label %if.else1492, label %if.end1497
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if.else1492: ; preds = %sw.epilog1489, %entry
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br label %if.end1497
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if.end1497: ; preds = %if.else1492, %sw.epilog1489, %while.body350
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%c.0 = phi i32 [ 0, %if.else1492 ], [ %max, %sw.epilog1489 ], [ 0, %while.body350 ]
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ret i32 %c.0
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}
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define ptr @Perl_pp_refassign(ptr %PL_stack_sp, i1 %tobool.not, i1 %tobool3.not, i1 %cond1) nounwind {
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; CHECK-LABEL: Perl_pp_refassign:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: andi a1, a1, 1
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; CHECK-NEXT: beqz a1, .LBB1_3
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; CHECK-NEXT: # %bb.1:
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; CHECK-NEXT: li a1, 0
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; CHECK-NEXT: andi a2, a2, 1
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; CHECK-NEXT: bnez a2, .LBB1_4
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; CHECK-NEXT: .LBB1_2: # %cond.true4
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; CHECK-NEXT: ld a0, 0(a0)
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; CHECK-NEXT: snez a0, a0
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; CHECK-NEXT: bnez a0, .LBB1_5
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; CHECK-NEXT: j .LBB1_6
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; CHECK-NEXT: .LBB1_3: # %cond.true
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; CHECK-NEXT: ld a1, 0(a0)
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; CHECK-NEXT: andi a2, a2, 1
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; CHECK-NEXT: beqz a2, .LBB1_2
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; CHECK-NEXT: .LBB1_4:
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; CHECK-NEXT: j .LBB1_6
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; CHECK-NEXT: .LBB1_5: # %sw.bb85
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; CHECK-NEXT: addi sp, sp, -16
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; CHECK-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; CHECK-NEXT: ld a0, 0(a1)
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; CHECK-NEXT: call Perl_av_store
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; CHECK-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; CHECK-NEXT: addi sp, sp, 16
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; CHECK-NEXT: .LBB1_6: # %common.ret
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; CHECK-NEXT: li a0, 0
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; CHECK-NEXT: ret
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entry:
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br i1 %tobool.not, label %cond.end, label %cond.true
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cond.true: ; preds = %entry
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%0 = load ptr, ptr %PL_stack_sp, align 8
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br label %cond.end
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cond.end: ; preds = %cond.true, %entry
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%cond = phi ptr [ %0, %cond.true ], [ null, %entry ]
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br i1 %tobool3.not, label %cond.end7, label %cond.true4
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cond.true4: ; preds = %cond.end
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%1 = load ptr, ptr %PL_stack_sp, align 8
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%2 = icmp ne ptr %1, null
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br label %cond.end7
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cond.end7: ; preds = %cond.true4, %cond.end
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%cond84 = phi i1 [ %2, %cond.true4 ], [ false, %cond.end ]
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br i1 %cond1, label %if.end48, label %sw.bb
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sw.bb: ; preds = %cond.end7
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call void @llvm.assume(i1 %tobool.not)
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br label %if.end48
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if.end48: ; preds = %sw.bb, %cond.end7
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br i1 %cond84, label %sw.bb85, label %common.ret
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common.ret: ; preds = %sw.bb85, %if.end48
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ret ptr null
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sw.bb85: ; preds = %if.end48
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%3 = load i64, ptr %cond, align 8
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%call125 = call fastcc ptr @Perl_av_store(i64 %3)
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br label %common.ret
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}
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attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
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attributes #1 = { nocallback nofree nosync nounwind willreturn memory(inaccessiblemem: write) }
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