forked from OSchip/llvm-project
Reduced a stronger test case for coalescer bug PR10920.
llvm-svn: 139898
This commit is contained in:
Andrew Trick
parent
113f2d5289
commit
b57d9c38a2
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@ -1,4 +1,4 @@
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; RUN: llc < %s -march=x86
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; RUN: llc < %s -march=x86 | FileCheck %s
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;
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; Test RegistersDefinedFromSameValue. We have multiple copies of the same vreg:
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; while.body85.i:
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@ -14,12 +14,28 @@
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; Prior to fixing PR10920 401.bzip miscompile, the coalescer would
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; consider vreg1 and vreg27 to be copies of the same value. It would
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; then remove one of the critical edge copes, which cannot safely be removed.
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;
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; CHECK: ## %while.body85.i
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; CHECK-NOT: ## %
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; CHECK-NOT: add
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; CHECK: movl %[[POSTR:e[abcdxi]+]], %[[PRER:e[abcdxi]+]]
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; CHECK: addl %{{.*}}, %[[POSTR]]
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; CHECK: ## %while.end.i
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; CHECK: movl %[[POSTR]], %[[USER:e[abcdxi]+]]
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; CHECK: ## %land.lhs.true.i
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; CHECK: movl %[[POSTR]], %[[USER]]
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; CHECK: ## %land.lhs.true103.i
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; CHECK: movl %[[POSTR]], %[[USER]]
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; CHECK: ## %if.then108.i
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; [[PRER] live out, so nothing on this path should define it.
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; CHECK-NOT: , %[[PRER]]
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; CHECK: ## %if.end117.i
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128-n8:16:32"
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@.str3 = external unnamed_addr constant [59 x i8], align 1
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define void @test() nounwind ssp {
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define void @BZ2_compressBlock() nounwind ssp {
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entry:
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br i1 undef, label %if.then68, label %if.end85
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@ -42,45 +58,54 @@ for.cond.for.cond19.preheader_crit_edge.i: ; preds = %makeMaps_e.exit.i
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unreachable
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for.cond19.preheader.i: ; preds = %makeMaps_e.exit.i
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br i1 undef, label %for.body25.lr.ph.i, label %for.cond33.preheader.i
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for.body25.lr.ph.i: ; preds = %for.cond19.preheader.i
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br label %for.body25.i
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for.cond33.preheader.i: ; preds = %for.body25.i, %for.cond19.preheader.i
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br i1 undef, label %if.then.i, label %if.end.i
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if.then.i: ; preds = %for.cond19.preheader.i
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for.body25.i: ; preds = %for.body25.i, %for.body25.lr.ph.i
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br i1 undef, label %for.body25.i, label %for.cond33.preheader.i
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if.then.i: ; preds = %for.cond33.preheader.i
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br label %if.end.i
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if.end.i: ; preds = %if.then.i, %for.cond19.preheader.i
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if.end.i: ; preds = %if.then.i, %for.cond33.preheader.i
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br i1 undef, label %for.inc27.us.5.i, label %for.end30.i
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for.end30.i: ; preds = %if.end.i
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for.end30.i: ; preds = %for.inc27.us.5.i, %if.end.i
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br i1 undef, label %if.end36.i, label %if.then35.i
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if.then35.i: ; preds = %for.end30.i
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unreachable
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if.end36.i: ; preds = %for.end30.i
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%sub83.i = add nsw i32 undef, 1
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br label %while.body.i188
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for.cond182.preheader.i: ; preds = %for.cond138.preheader.i
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unreachable
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for.cond182.preheader.i: ; preds = %for.end173.i
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br i1 undef, label %for.inc220.us.i, label %while.body300.preheader.i
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while.body.i188: ; preds = %for.cond138.preheader.i, %if.end36.i
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%sub.i187 = add nsw i32 0, -1
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br i1 undef, label %while.body85.i, label %if.end117.i
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while.body.i188: ; preds = %for.end173.i, %if.end36.i
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%gs.0526.i = phi i32 [ 0, %if.end36.i ], [ %add177.i, %for.end173.i ]
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%or.cond514517.i = and i1 false, undef
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br i1 %or.cond514517.i, label %while.body85.i, label %if.end117.i
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while.body85.i: ; preds = %while.body85.i, %while.body.i188
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%ge.0519.i = phi i32 [ %inc87.i, %while.body85.i ], [ %sub.i187, %while.body.i188 ]
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%aFreq.0518.i = phi i32 [ %add93.i, %while.body85.i ], [ 0, %while.body.i188 ]
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%inc87.i = add nsw i32 %ge.0519.i, 1
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%inc87.i = add nsw i32 0, 1
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%tmp91.i = load i32* undef, align 4, !tbaa !0
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%add93.i = add nsw i32 %tmp91.i, %aFreq.0518.i
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%cmp84.i = icmp slt i32 %inc87.i, undef
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%or.cond514.i = and i1 undef, %cmp84.i
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%or.cond514.i = and i1 undef, false
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br i1 %or.cond514.i, label %while.body85.i, label %while.end.i
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while.end.i: ; preds = %while.body85.i
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br i1 undef, label %land.lhs.true.i, label %if.end117.i
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land.lhs.true.i: ; preds = %while.end.i
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br i1 undef, label %if.end117.i, label %land.lhs.true103.i
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br i1 undef, label %land.lhs.true103.i, label %if.end117.i
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land.lhs.true103.i: ; preds = %land.lhs.true.i
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br i1 undef, label %if.then108.i, label %if.end117.i
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@ -89,21 +114,55 @@ if.then108.i: ; preds = %land.lhs.true103.i
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br label %if.end117.i
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if.end117.i: ; preds = %if.then108.i, %land.lhs.true103.i, %land.lhs.true.i, %while.end.i, %while.body.i188
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%aFreq.1.i = phi i32 [ %aFreq.0518.i, %if.then108.i ], [ %add93.i, %land.lhs.true103.i ], [ %add93.i, %while.end.i ], [ 0, %while.body.i188 ], [ %add93.i, %land.lhs.true.i ]
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%cmp121.i = icmp sgt i32 undef, 2
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br i1 %cmp121.i, label %if.then122.i, label %for.cond138.preheader.i
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%aFreq.1.i = phi i32 [ %aFreq.0518.i, %if.then108.i ], [ %add93.i, %land.lhs.true103.i ], [ %add93.i, %land.lhs.true.i ], [ %add93.i, %while.end.i ], [ 0, %while.body.i188 ]
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%ge.1.i = phi i32 [ 0, %if.then108.i ], [ %inc87.i, %land.lhs.true103.i ], [ %inc87.i, %land.lhs.true.i ], [ %inc87.i, %while.end.i ], [ 0, %while.body.i188 ]
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br i1 undef, label %if.then122.i, label %for.cond138.preheader.i
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if.then122.i: ; preds = %if.end117.i
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call void (...)* @fprintf(i32 undef, i32 0, i32 undef, i32 %aFreq.1.i, double undef) nounwind
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unreachable
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call void (...)* @fprintf(i32 undef, i32 %gs.0526.i, i32 %ge.1.i, i32 %aFreq.1.i, double undef) nounwind
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br label %for.cond138.preheader.i
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for.cond138.preheader.i: ; preds = %if.end117.i
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for.cond138.preheader.i: ; preds = %if.then122.i, %if.end117.i
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br i1 undef, label %for.body143.lr.ph.i, label %for.end173.i
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for.body143.lr.ph.i: ; preds = %for.cond138.preheader.i
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br label %for.body143.i
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for.body143.i: ; preds = %for.body143.i, %for.body143.lr.ph.i
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br i1 undef, label %for.end173.i, label %for.body143.i
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for.end173.i: ; preds = %for.body143.i, %for.cond138.preheader.i
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%add177.i = add nsw i32 %ge.1.i, 1
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%cmp73.i = icmp sgt i32 undef, 0
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br i1 %cmp73.i, label %while.body.i188, label %for.cond182.preheader.i
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for.inc27.us.5.i: ; preds = %if.end.i
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for.inc220.us.i: ; preds = %for.cond182.preheader.i
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unreachable
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while.body300.preheader.i: ; preds = %for.cond182.preheader.i
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br i1 undef, label %for.end335.i, label %while.end2742.i
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for.end335.i: ; preds = %for.end2039.i, %while.body300.preheader.i
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br label %for.body2021.i
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for.body2021.i: ; preds = %for.body2021.i, %for.end335.i
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br i1 undef, label %for.body2021.i, label %for.end2039.i
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for.end2039.i: ; preds = %for.body2021.i
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br label %for.end335.i
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while.end2742.i: ; preds = %while.body300.preheader.i
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br i1 undef, label %if.then2748.i, label %for.body2778.i
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if.then2748.i: ; preds = %while.end2742.i
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unreachable
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for.body2778.i: ; preds = %while.end2742.i
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unreachable
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for.inc27.us.5.i: ; preds = %if.end.i
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br label %for.end30.i
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if.end85: ; preds = %entry
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ret void
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}
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