| ; RUN: llc -verify-regalloc -verify-machineinstrs < %s |
| ; PR27275: When enabling remat for vreg defined by PHIs, make sure the update |
| ; of the live range removes dead phi. Otherwise, we may end up with PHIs with |
| ; incorrect operands and that will trigger assertions or verifier failures |
| ; in later passes. |
| |
| target datalayout = "e-m:e-p:32:32-f64:32:64-f80:32-n8:16:32-S128" |
| target triple = "i386-unknown-linux-gnu" |
| |
| @b = external global i64, align 8 |
| @d = external global i32, align 4 |
| @e = external global i64, align 8 |
| @h = external global i16, align 2 |
| @a = external global i8, align 1 |
| @g = external global i64, align 8 |
| @j = external global i32, align 4 |
| @f = external global i16, align 2 |
| @.str = external unnamed_addr constant [12 x i8], align 1 |
| |
| define void @fn1() { |
| entry: |
| %tmp = load i64, ptr @b, align 8 |
| %or = or i64 0, 3299921317 |
| %and = and i64 %or, %tmp |
| %tmp1 = load i32, ptr @d, align 4 |
| br i1 undef, label %lor.rhs, label %lor.end |
| |
| lor.rhs: ; preds = %entry |
| %tobool3 = icmp ne i8 undef, 0 |
| br label %lor.end |
| |
| lor.end: ; preds = %lor.rhs, %entry |
| %lor.ext = zext i1 undef to i32 |
| %tmp2 = load i64, ptr @e, align 8 |
| br i1 undef, label %lor.rhs5, label %lor.end7 |
| |
| lor.rhs5: ; preds = %lor.end |
| br label %lor.end7 |
| |
| lor.end7: ; preds = %lor.rhs5, %lor.end |
| %tmp3 = phi i1 [ true, %lor.end ], [ false, %lor.rhs5 ] |
| %neg13 = xor i64 %tmp, -1 |
| %conv25 = zext i1 %tmp3 to i32 |
| %tobool46 = icmp eq i64 %tmp, 0 |
| %.pre = load i16, ptr @h, align 2 |
| %tobool10 = icmp eq i16 %.pre, 0 |
| %neg.us = xor i32 %tmp1, -1 |
| %conv12.us = sext i32 %neg.us to i64 |
| %tobool23.us = icmp eq i64 %tmp2, %and |
| %conv39.us = sext i32 %tmp1 to i64 |
| br label %LABEL_mSmSDb |
| |
| LABEL_mSmSDb.loopexit: ; preds = %lor.end32.us |
| %conv42.us.lcssa = phi i32 [ %conv42.us, %lor.end32.us ] |
| store i64 undef, ptr @g, align 8 |
| br label %LABEL_mSmSDb |
| |
| LABEL_mSmSDb: ; preds = %LABEL_mSmSDb.loopexit, %lor.end7 |
| %tmp4 = phi i32 [ undef, %lor.end7 ], [ %conv42.us.lcssa, %LABEL_mSmSDb.loopexit ] |
| %tmp5 = phi i64 [ %tmp, %lor.end7 ], [ 0, %LABEL_mSmSDb.loopexit ] |
| br i1 %tobool10, label %LABEL_BRBRN.preheader, label %if.then |
| |
| if.then: ; preds = %LABEL_mSmSDb |
| store i8 undef, ptr @a, align 1 |
| br label %LABEL_BRBRN.preheader |
| |
| LABEL_BRBRN.preheader: ; preds = %if.then, %LABEL_mSmSDb |
| %.pre63 = load i64, ptr @g, align 8 |
| br i1 %tobool46, label %LABEL_BRBRN.us, label %LABEL_BRBRN.outer |
| |
| LABEL_BRBRN.outer: ; preds = %if.then47, %LABEL_BRBRN.preheader |
| %.ph = phi i32 [ 0, %if.then47 ], [ %tmp4, %LABEL_BRBRN.preheader ] |
| %.ph64 = phi i32 [ %conv50, %if.then47 ], [ %tmp1, %LABEL_BRBRN.preheader ] |
| %.ph65 = phi i64 [ %tmp16, %if.then47 ], [ %.pre63, %LABEL_BRBRN.preheader ] |
| %.ph66 = phi i64 [ 0, %if.then47 ], [ %tmp2, %LABEL_BRBRN.preheader ] |
| %.ph67 = phi i64 [ %.pre56.pre, %if.then47 ], [ %tmp5, %LABEL_BRBRN.preheader ] |
| %neg = xor i32 %.ph64, -1 |
| %conv12 = sext i32 %neg to i64 |
| %tobool23 = icmp eq i64 %.ph66, %and |
| %tmp6 = load i32, ptr @j, align 4 |
| %shr = lshr i32 %conv25, %tmp6 |
| %conv39 = sext i32 %.ph64 to i64 |
| br label %LABEL_BRBRN |
| |
| LABEL_BRBRN.us: ; preds = %lor.end32.us, %LABEL_BRBRN.preheader |
| %tmp7 = phi i32 [ %conv42.us, %lor.end32.us ], [ %tmp4, %LABEL_BRBRN.preheader ] |
| %tmp8 = phi i64 [ undef, %lor.end32.us ], [ %.pre63, %LABEL_BRBRN.preheader ] |
| %tmp9 = phi i64 [ %tmp10, %lor.end32.us ], [ %tmp5, %LABEL_BRBRN.preheader ] |
| %mul.us = mul i64 %tmp8, %neg13 |
| %mul14.us = mul i64 %mul.us, %conv12.us |
| %cmp.us = icmp sgt i64 %tmp2, %mul14.us |
| %conv16.us = zext i1 %cmp.us to i64 |
| %xor.us = xor i64 %conv16.us, %tmp9 |
| %rem18.us = urem i32 %lor.ext, %tmp7 |
| %conv19.us = zext i32 %rem18.us to i64 |
| br i1 %tobool23.us, label %lor.rhs24.us, label %lor.end32.us |
| |
| lor.rhs24.us: ; preds = %LABEL_BRBRN.us |
| br label %lor.end32.us |
| |
| lor.end32.us: ; preds = %lor.rhs24.us, %LABEL_BRBRN.us |
| %tmp10 = phi i64 [ -2, %LABEL_BRBRN.us ], [ -1, %lor.rhs24.us ] |
| %xor.us.not = xor i64 %xor.us, -1 |
| %neg36.us = and i64 %conv19.us, %xor.us.not |
| %conv37.us = zext i32 %tmp7 to i64 |
| %sub38.us = sub nsw i64 %neg36.us, %conv37.us |
| %mul40.us = mul nsw i64 %sub38.us, %conv39.us |
| %neg41.us = xor i64 %mul40.us, 4294967295 |
| %conv42.us = trunc i64 %neg41.us to i32 |
| %tobool43.us = icmp eq i8 undef, 0 |
| br i1 %tobool43.us, label %LABEL_mSmSDb.loopexit, label %LABEL_BRBRN.us |
| |
| LABEL_BRBRN: ; preds = %lor.end32, %LABEL_BRBRN.outer |
| %tmp11 = phi i32 [ %conv42, %lor.end32 ], [ %.ph, %LABEL_BRBRN.outer ] |
| %tmp12 = phi i64 [ %neg21, %lor.end32 ], [ %.ph65, %LABEL_BRBRN.outer ] |
| %tmp13 = phi i64 [ %conv35, %lor.end32 ], [ %.ph67, %LABEL_BRBRN.outer ] |
| %mul = mul i64 %tmp12, %neg13 |
| %mul14 = mul i64 %mul, %conv12 |
| %cmp = icmp sgt i64 %.ph66, %mul14 |
| %conv16 = zext i1 %cmp to i64 |
| %xor = xor i64 %conv16, %tmp13 |
| %rem18 = urem i32 %lor.ext, %tmp11 |
| %conv19 = zext i32 %rem18 to i64 |
| %neg21 = or i64 %xor, undef |
| br i1 %tobool23, label %lor.rhs24, label %lor.end32 |
| |
| lor.rhs24: ; preds = %LABEL_BRBRN |
| %tmp14 = load volatile i16, ptr @f, align 2 |
| %conv26 = sext i16 %tmp14 to i32 |
| %and27 = and i32 %conv26, %shr |
| %conv28 = sext i32 %and27 to i64 |
| %mul29 = mul nsw i64 %conv28, %tmp |
| %and30 = and i64 %mul29, %tmp13 |
| %tobool31 = icmp ne i64 %and30, 0 |
| br label %lor.end32 |
| |
| lor.end32: ; preds = %lor.rhs24, %LABEL_BRBRN |
| %tmp15 = phi i1 [ true, %LABEL_BRBRN ], [ %tobool31, %lor.rhs24 ] |
| %lor.ext33 = zext i1 %tmp15 to i32 |
| %neg34 = xor i32 %lor.ext33, -1 |
| %conv35 = sext i32 %neg34 to i64 |
| %xor.not = xor i64 %xor, -1 |
| %neg36 = and i64 %conv19, %xor.not |
| %conv37 = zext i32 %tmp11 to i64 |
| %sub38 = sub nsw i64 %neg36, %conv37 |
| %mul40 = mul nsw i64 %sub38, %conv39 |
| %neg41 = xor i64 %mul40, 4294967295 |
| %conv42 = trunc i64 %neg41 to i32 |
| %tobool43 = icmp eq i8 undef, 0 |
| br i1 %tobool43, label %if.then47, label %LABEL_BRBRN |
| |
| if.then47: ; preds = %lor.end32 |
| tail call void (ptr, ...) @printf(ptr @.str, i64 %conv39) |
| %tmp16 = load i64, ptr @g, align 8 |
| %neg49 = xor i64 %tmp16, 4294967295 |
| %conv50 = trunc i64 %neg49 to i32 |
| %.pre56.pre = load i64, ptr @b, align 8 |
| br label %LABEL_BRBRN.outer |
| } |
| |
| declare void @printf(ptr nocapture readonly, ...) |
