a1710eb3cd
The LIT test cases were migrated with the script provided by Nikita Popov. No manual changes were made. Committed without review since no functional changes, after consultation with uweigand.
94 lines
4.5 KiB
LLVM
94 lines
4.5 KiB
LLVM
; Test that MergeConsecutiveStores() does not during DAG combining
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; incorrectly drop a chain dependency to a store previously chained to
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; one of two combined loads.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 | FileCheck %s
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@A = common global [2048 x float] zeroinitializer, align 4
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; Function Attrs: nounwind
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define signext i32 @main(i32 signext %argc, ptr nocapture readnone %argv) #0 {
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entry:
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br label %for.body
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for.body: ; preds = %for.body, %entry
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%indvars.iv24 = phi i64 [ 0, %entry ], [ %indvars.iv.next25, %for.body ]
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%sum.018 = phi float [ 0.000000e+00, %entry ], [ %add, %for.body ]
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%0 = trunc i64 %indvars.iv24 to i32
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%conv = sitofp i32 %0 to float
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%arrayidx = getelementptr inbounds [2048 x float], ptr @A, i64 0, i64 %indvars.iv24
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store float %conv, ptr %arrayidx, align 4
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%add = fadd float %sum.018, %conv
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%indvars.iv.next25 = add nuw nsw i64 %indvars.iv24, 1
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%exitcond26 = icmp eq i64 %indvars.iv.next25, 2048
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br i1 %exitcond26, label %for.end, label %for.body
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for.end: ; preds = %for.body
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br label %for.body.3.lr.ph.i.preheader
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for.body.3.lr.ph.i.preheader: ; preds = %complex_transpose.exit, %for.end
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%i.116 = phi i32 [ 0, %for.end ], [ %inc9, %complex_transpose.exit ]
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br label %for.body.3.lr.ph.i
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for.body.3.lr.ph.i: ; preds = %for.body.3.lr.ph.i.preheader, %for.inc.40.i
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%indvars.iv19 = phi i32 [ 1, %for.body.3.lr.ph.i.preheader ], [ %indvars.iv.next20, %for.inc.40.i ]
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%indvars.iv57.i = phi i64 [ 1, %for.body.3.lr.ph.i.preheader ], [ %indvars.iv.next58.i, %for.inc.40.i ]
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%1 = shl nsw i64 %indvars.iv57.i, 1
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%2 = shl nsw i64 %indvars.iv57.i, 6
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br label %for.body.3.i
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for.body.3.i: ; preds = %for.body.3.i, %for.body.3.lr.ph.i
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; CHECK-LABEL: .LBB0_5:
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; CHECK-NOT: stfh %r{{.*}}, 0(%r{{.*}})
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; CHECK: lg %r{{.*}}, 8(%r{{.*}})
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; Overlapping load should go before the store
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%indvars.iv.i = phi i64 [ 0, %for.body.3.lr.ph.i ], [ %indvars.iv.next.i, %for.body.3.i ]
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%3 = shl nsw i64 %indvars.iv.i, 6
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%4 = add nuw nsw i64 %3, %1
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%arrayidx.i = getelementptr inbounds [2048 x float], ptr @A, i64 0, i64 %4
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%5 = load i32, ptr %arrayidx.i, align 4
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%arrayidx9.i = getelementptr inbounds float, ptr getelementptr inbounds ([2048 x float], ptr @A, i64 0, i64 1), i64 %4
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%6 = load i32, ptr %arrayidx9.i, align 4
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%7 = shl nsw i64 %indvars.iv.i, 1
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%8 = add nuw nsw i64 %7, %2
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%arrayidx14.i = getelementptr inbounds [2048 x float], ptr @A, i64 0, i64 %8
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%9 = load i32, ptr %arrayidx14.i, align 4
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%arrayidx19.i = getelementptr inbounds float, ptr getelementptr inbounds ([2048 x float], ptr @A, i64 0, i64 1), i64 %8
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%10 = load i32, ptr %arrayidx19.i, align 4
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store i32 %5, ptr %arrayidx14.i, align 4
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store i32 %6, ptr %arrayidx19.i, align 4
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store i32 %9, ptr %arrayidx.i, align 4
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store i32 %10, ptr %arrayidx9.i, align 4
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%indvars.iv.next.i = add nuw nsw i64 %indvars.iv.i, 1
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%lftr.wideiv = trunc i64 %indvars.iv.next.i to i32
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%exitcond21 = icmp eq i32 %lftr.wideiv, %indvars.iv19
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br i1 %exitcond21, label %for.inc.40.i, label %for.body.3.i
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for.inc.40.i: ; preds = %for.body.3.i
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%indvars.iv.next58.i = add nuw nsw i64 %indvars.iv57.i, 1
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%indvars.iv.next20 = add nuw nsw i32 %indvars.iv19, 1
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%exitcond22 = icmp eq i64 %indvars.iv.next58.i, 32
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br i1 %exitcond22, label %complex_transpose.exit, label %for.body.3.lr.ph.i
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complex_transpose.exit: ; preds = %for.inc.40.i
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%inc9 = add nuw nsw i32 %i.116, 1
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%exitcond23 = icmp eq i32 %inc9, 10
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br i1 %exitcond23, label %for.body.14.preheader, label %for.body.3.lr.ph.i.preheader
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for.body.14.preheader: ; preds = %complex_transpose.exit
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br label %for.body.14
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for.body.14: ; preds = %for.body.14.preheader, %for.body.14
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%indvars.iv = phi i64 [ %indvars.iv.next, %for.body.14 ], [ 0, %for.body.14.preheader ]
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%sum.115 = phi float [ %add17, %for.body.14 ], [ 0.000000e+00, %for.body.14.preheader ]
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%arrayidx16 = getelementptr inbounds [2048 x float], ptr @A, i64 0, i64 %indvars.iv
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%11 = load float, ptr %arrayidx16, align 4
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%add17 = fadd float %sum.115, %11
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%indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
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%exitcond = icmp eq i64 %indvars.iv.next, 2048
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br i1 %exitcond, label %for.end.20, label %for.body.14
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for.end.20: ; preds = %for.body.14
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ret i32 0
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}
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