| ; 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, i64* @b, align 8 | |
| %or = or i64 0, 3299921317 | |
| %and = and i64 %or, %tmp | |
| %tmp1 = load i32, i32* @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, i64* @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, i16* @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, i64* @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, i8* @a, align 1 | |
| br label %LABEL_BRBRN.preheader | |
| LABEL_BRBRN.preheader: ; preds = %if.then, %LABEL_mSmSDb | |
| %.pre63 = load i64, i64* @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, i32* @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, i16* @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 (i8*, ...) @printf(i8* getelementptr inbounds ([12 x i8], [12 x i8]* @.str, i32 0, i32 0), i64 %conv39) | |
| %tmp16 = load i64, i64* @g, align 8 | |
| %neg49 = xor i64 %tmp16, 4294967295 | |
| %conv50 = trunc i64 %neg49 to i32 | |
| %.pre56.pre = load i64, i64* @b, align 8 | |
| br label %LABEL_BRBRN.outer | |
| } | |
| declare void @printf(i8* nocapture readonly, ...) |